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four years (1869-1903), making the ninth successive year form a mantle on each side of the body, and unite on of low floods. The mean rainfall, and the oscillation of the lower part of the back. The culmination of this type the rain-belt with the apparent motion of the sun, are very is formed by the white-tailed guereza (C. caudatus) of the clearly shown by coloured maps, drawn for each month. Kilimanjaro district, in which the pendent white mantle

The report of the Falmouth Observatory committee of is still longer, and the tail, which is wholly white except the Royal Cornwall Polytechnic Society for the year 1905 for a small length at the root, is clothed with long pendent (one of the principal observatories subsidised by the hair ; the cheek- and throat-tufts, however, have been lost, Meteorological Office) shows that a record reading of the so that the head is short-haired, with the face and throat barometer for that part of the British Islands occurred on white. January 28, viz. 31.097 inches (corrected and reduced to The West African white-thighed guereza (C. vellerosus) sea-level). The next highest reading at Falmouth during appears to exhibit a kind of retrograde development in the last thirty years was 30-981 inches, on January 18, these respects, the body having lost the mantle of long 1882. Another interesting point is the mean temperature white hair and the tail its white “flag," while the white of the sea-surface, taken one mile outside the harbour, of the perineal patch has spread on to the hinder and outer riz. 53o3, being 2°.3 above the mean temperature of the sides of the thighs. In this case we find practical reversion air. The mean monthly sea-temperature was only below to the type of the black guereza, with the exception that that of the air in June, July, and August. Much attention the band on the forehead, the sides of the face and throat, is given to magnetic observations, and the instruments are the thighs, and almost the whole tail have become white, not affected by electric tramways. During a display of while the long hair has disappeared from the face. In the aurora borealis on the night of November 15, an easterly opinion of the author the colouring and special developmovement in the declination took place at 8h. 53m. p.m. which in twelve minutes reduced it about 33', while in the subsequent twenty minutes the declination increased about 41', which was 8' west of its position before the movement occurred.

The Jahrbuch of the Norwegian Meteorological Institute for 1905 contains hourly observations for Christiania, with tri-daily readings and summaries for other stations. The results are given according to the international scheme, before, the only change being that mid-European time has been introduced (one hour earlier than Greenwich), so that the observations tei-graphic reporting stations, which previously taken by Christiania time, are now made seventeen minutes earlier than in privious years, while at the ordinary stations the time of taking observations has not been altered. Accompanying the Jahrbuch is part xiv. of the valuable series of climatological tables for Norway, containing the average monthly amount of cloud for the Various directions of wind (“cloud windroses "); at most of the stations the averages are for a period of twenty years (1876–95).

The trigonometrical branch office at Dehra Dun has published a valuable series of daily Fig. 1.-White-tailed Guereza (Cololus caudatus). From the Proceedings of th rainfall observations for each of the thirty

Zoological Society. six years 1868–1903. The mean annual fall is 84.72 inches, of which 65 per cent. falls in ment of the long hair in the white-tailed guereza form a July and August. The maximum yearly amount protective modification, but the purport of the colouring of 122.47 inches, in 1894, and the minimum 41.69 inches, in the intermediate forms between this and the black guereza 1877. The greatest fall in one day was 12.47 inches, on is left undecided. August 10, 1896. From a summary of the highest and lowest temperatures in the shade, for the same years, we observe that the mean of the annual extremes was 104°:3, the absolute maximum being 108°:4, on May 19, 1892

ELECTRICITY IN MINES. (108°.3 on June 5, 1890), and the minimum 31o.8, on January 13, 1874, the next lowest being 33°9, on February

A VERY great development has taken place during the 5. 1876.

past two years in electrical machinery and apparatus for working colliery plant. Manufacturers seem at last to

have realised that machines and accessories must be adapted COLOURING OF GUEREZA MONKEYS.

and made to suit the conditions existing in collieries, and

that the collieries cannot be adapted to suit their standard I

machines. Consequently, in the colliery exhibition which of the current year, Mr. Lydekker contributes a paper

has just taken place, the result of experience in colliery on colour-evolution in the black or black and white tropical work was clearly put before us in entirely new designs of African monkeys of the genus Colobus commonly known motors and switchgear specially adapted for this work. as guerezas. Štarting with a wholly black monkey, like The details of colliery requirements have been most the West African C. satanas, in which, although there is carefully studied and gone into, and the designs prove the a fringe of long hair round the face, the body is com- tremendous development that has taken place. Whereas paratively short-haired and the tail not tufted, the author a few years ago contractors simply attached their standard shows how a gradation can be traced through species machine to a haulage-gear or coal-cutter, and supplied the like C. palliatus and C. sharpei of East Central Africa, in ordinary switch-gear as for everyday use, to-day we find which tufts of long white hair (larger in the second than that it is the general rule for motors to be designed and in the first of the two species named) make their appear

built for the particular work for which they are intended, ance on the sides of the face and shoulders, as well as on and to be made part and parcel of the machine they have the terminal third of the tail, to the Abyssinian C. guereza,

to drive. The same applies to the switch-gear, and a large in which the white shoulder-tufts extend backwards to supply of different forms of specially enclosed switches für

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use in very fiery mines proves how thoroughly the manu- and prizes were presented by her to the students before facturers have interested themselves in the matter.

a large assembly of persons interested in agriculture, inThe automatic and electrical devices for regulating and cluding Lord Ashcombe, Mr. Laurence Hardy, M.P., and signalling in connection with electrically driven winding Mrs. Laurence Hardy, Mr. Henniker-Heaton, M.P., Mr. engines were quite the most interesting and valuable intro- Marsham (chairman Kent

County Council). Major duction in this year's exhibition, and the fact that by far Craigie, C.B. (Board of Agriculture), the Poet Laureate, the greater number of coal-cutters and drills which were Lady Theobald Butler, Dr. Clowes, and others. The new exhibited were fitted with electric motors should go far to buildings have increased the size of the college by about prove that electricity is fighting its way successfully against one-third its present

The additions include a the older established methods of colliery procedure.

veterinary and bacteriological laboratory, a large new Other arrangements of colliery machinery showing the drawing school, a new zoological research laboratory, a adaptability of electric motors were well represented by chemical research room connected with a greenhouse, new motor-driven pumps, fans, hoists, heading machines, and offices and students' common room, and a large detached elevators, and among interesting signs of the times were gymnasium, the latter and the drawing school both the electrically driven air compressors.

anonymous gifts. The additions have permitted the This development in colliery work is quite in keeping enlargement of the biological laboratory and one of the with the expansion of the use of electricity for power pur- lecture rooms to nearly double their former size, and the poses which is taking place at the present time. The formation of a mycological research room. Electric light many power schemes now in hand or being brought before has been installed throughout. The college may now be Parliament also show that, although it has been a long said to be the most completely equipped agricultural time coming, electricity as a motive power for general institution in the country. The principal, in addressing use may now be said to have arrived.

the meeting, and also Mr. Laurence Hardy, in seconding

the vote of thanks to Lady Carrington, both spoke of the UNIVERSITY AND EDUCATIONAL

importance of research work and urged strongly that

national financial aid should be given to the college, which INTELLIGENCE.

has opportunities for such work as cannot be found elseThe annual meeting of the Midland Agricultural and where. Dairy College will be held on Monday next, July 30, when

HIGHER education will benefit greatly by the handsome the certificates gained during last session will be dis

bequests detailed in the will of the late Mr. Alfred Beit. tributed, and the report on the year's work presented.

The college of technology (including mining and metalMR. P. Fraser has been appointed lecturer in mathe- lurgy) in connection with the University of London receives matics at University College, Bristol, in succession to Mr. 50,000l. and 5000 preferred shares of 21. 108. each in De S. B. McLaren, who has resigned to take up an appoint- Beers Consolidated Mines (Limited). The sum of 200,0001, ment in the University of Birmingham. The University is left to the University of Johannesburg to be applied in of Liverpool has conferred the degree of Doctor of or towards building and equipping university buildings on Engineering on Mr. J. Morrow, lecturer in engineering in the site of the property recently given by Mr. Beit to University College, Bristol.

Johannesburg (including the construction of a tramway DR. JAMES STEWART, of Rickmansworth, who died on connecting the property with Johannesburg), the income of June 2 last, left more than 25,000l. to the University of such 200,000l. to be applied meanwhile for educational Melbourne, Victoria, to found and endow in perpetuity projects as the Board of Education at Johannesburg may three scholarships, each of an annual value of not more determine; but if at the expiration of ten years the than 5ol., and tenable for two or three years, to be called 200,000l. shall not have been applied in such building and the

* Stewart Scholarships,' to be awarded for equipment, then the legacy is to lapse, 200,000l. is to be anatomy, one for medicine, and one for surgery. In addi- distributed within two years after Mr. Beit's death by a tion to this, more than 3000l. is left to the Ballarat School board of trustees, of whom the present Bishop of Mashonaof Mines for a “ Stewart Fund” to be applied to the land is to be one, for educational, public, and other augmentation for ever of the salary of a teacher of miner- charitable purposes in Rhodesia. Mr. Beit also bequeathed alogy, and about 1500l. to the Ballarat Mechanics’ Institute 25,000l. to the Institute of Medical Sciences Fund, Unifor replenishing the library.

versity of London, and 25,000l. to the Rhodes l'niversity, The new regulations of the Board of Education for the

Grahamstown, Cape Colony ; 20,000l. to his firm of Eck. training of teachers and for the examination of students in

stein and Co., of Johannesburg, to be applied for educatraining colleges have been published. No very substantial

tional, public, and other charitable purposes in the Transalterations have been made in the present issue. It is

vaal Colony ; 15,000l, to his firm at Kimberley, to be applied satisfactory to find that no single detailed syllabus of

for educational, public, and other charitable purposes in or elementary science is included in the schemes of work

near Kimberley; and 15,000l. to Dr. Jameson, Prime regulating the instruction in the compulsory subjects of the

Minister of Cape Colony, and Sir Lewis L.. Michell, to examination to be conducted by the Board in 1908. After

be applied for educational, public, and other charitable a consideration of the needs of the students and of the purposes in Cape Colony (excluding Kimberley). facilities which the training college offers for science teaching, the authorities are to draw up a scheme of instruction

SOCIETIES IND ACADEMIES. in science and to submit it to the approval of the Board.

LONDON This instruction will in the main be tested by inspection, Chemical Society, July 5.-Prof. R. Meldola, F.R.S., and the students will be expected to be able to carry out president in the chair.-Saponarin, new glucoside experiments selected from that portion of the approved coloured blue with jodine: G. Barger. This substance syllabus which has been worked through up to the date has been isolated from Saponaria officinalis. It crystalof the inspector's visit, or to perform such experiments lises in microscopic needles and is hydrolysed by acids of similar character as the inspector may consider suitable. yielding glucose, vitexin, and a colouring matter, apparently Encouragement is to be given to students proposing to isomeric with vitexin, for which the name saponaretin is teach in country schools to take up what is called “rural suggested.-The constitution of umbellulone : F. Tutin. science,” which includes nature-study and the broad prin- l'mbellulone occurs in the essential oil of limbellularia ciples of agriculture. The whole tendency of these regula- Californica, and has the formula C.H.O. Its reactions tions is to discountenance a mere text-book acquaintance indicate that it has the constitution with the facts of science; the Board is to be congratulated upon its recognition of the value to teachers of a practical

CH,—-CH.- -CO training in the methods of science.

CH, . CH(Me)
On Wednesday, July 18, the new buildings of the South-
Eastern Agricultural College, Wye, were opened by Lady

CH- .-C(Me)==CH
Carrington in the unavoidable absence of the Minister of -The action of ethyl iodide and of propyl jodide on the
Agriculture. At the same time the diplomas, certificates, disodium derivative of diacetylacetone : A. W. Bain.-1

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possible source of error in Stas's nitrogen ratios : R. W. the world for plotting distributions, &c.-A destructive Gray. The researches of Rayleigh, Leduc, D. Berthelot, test of Hensen's theory of the uniformity of plankton over Guye, and the author confirm Stas's lower value for the large areas : Dr. Fowler. It was shown that great atomic weight of nitrogen, and an indirect comparison of variations in the plankton occurred on successive days at the atomic weights of nitrogen and silver from the results stations close together in a district apparently unappreciof Marignac, Scott, and Richards leads to the same result.ably affected by currents.—The scientific cruise of his --Electrolytic oxidation : H. D. Law. On oxidising yacht, Silver Belle, in 1906 : Dr. Wolfenden. The vessel benzoin by the electrolytic method, benzil, benzaldehyde, was chiefly occupied with trawling and hydrographic work, and benzoic acid are formed. In addition, a certain amount from Dublin to Funchal, and from Gibraltar to the of tarry matter is always obtained, the formation of which Josephine Bank and N. coast of Morocco. Mr. Byrne is a property of high potential discharge at the anode, and exhibited and commented on some of the fish obtained always takes place in the case of unsaturated compounds. during the cruise, of which the most interesting was -The ethyl esters of acetonyloxalic and acetophenyloxalic fine specimen of the little-known Himantolophus reinhardi, acids and the action of ethyl oxalate on acetanilide and its Lütken, said to have been taken in shallow water near homologues : S. Ruhemann.—An oxidation product of Gibraltar. indigotin : A. G. Perkin. On sublimation with limited

Faraday Society, July 2.-Prof. S. P. Thompson, access of air, pure indigotin gives a small quantity of a F.R.S., in the chair.-The oxidation of atmospheric vellow sublimate, which crystallises in needles and has nitrogen in electric arcs : Prof. Kr. Birkeland. This the formula C,H,O,N,.-Indigo-yellow : A. G. Perkin. will be dealt with in later number.-Preliminary in 1904 it was shown that the yellow colouring matter

report on the experiments made at Sault Ste. Marie, present in Java indigo is kampherol. Examination has

under Government auspices,

the smelting of now shown that it is derived from a glucoside (kampheritrin) Canadian iron

by the electrothermic

process : present in the leaves of Indigofera arrecta. It is hydro- | Dr. E. Haanel. The results obtained are summarised as lysed by acids into kampherol (1 mol.) and rhamnose follows :-(1) Magnetite (which is the chief Canadian ore) 12 mols.).—1 : 3-Diphenylbarbituric acid and some coloured

be as economically smelted by the electrothermic derivatives. Synthesis of 1: 3-diphenyluric acid : Miss

process as hematite. (2) Ores of high sulphur content not M. A. Whiteley.-The alkylation of rhamnose : T. Purdie

containing manganese can be made into pig-iron containing and C. R. Young Dimethyl acetone-rhamnoside,

only a few thousandths of i per cent. of sulphur. (3) The trimethyl methylrhamnoside, di- and tri-methylrhamnose,

silicon content can be varied as required for the class of und a number of their derivatives are described.-The

pig to be produced. (4) Charcoal, which can be cheaply djkvlation of l-arabinose : T. Purdie and R. E. Rose.

produced from mill refuse or wood which could not otherBi methylating Fischer's a-methylarabinoside with silver

wise be utilised, can be substituted for coke as a reducing oxide and methyl iodide, trimethyl a-methylarabinoside is

agent, without being briquetted with the ore. (5) A ferropohtained in large, well-formed crystals, and by hydrolysing nickel pig can be produced practically free from sulphur this with dilute hydrochloric acid, trimethyl arabinose is produced. Descriptions of these substances are given.—The (6) The experiment made with a titaniferous iron ore con

and of fine quality from roasted nickeliferous pyrrhotite. esters of triacetic lactone and triacetic acid : F. Sproxton.

taining 17.82 per cent. of titanic acid permits the conThe methyl and ethyl esters are described.-Optically active

clusion that titaniferous iron ores up to perhaps 5 per cent. riduced naphthoic acids, part ii., the resolution of the

titanic acid can be successfully treated by the electric tetrahydronaphthoic acids : R. H. Pickard and J. Yates. --The velocity of chemical change in the pentamethylene alkalis at low potentials : dissolving of platinum at the

process.--Electrolysis of dilute solutions of acids and wries: 1. Menschutkin, sen. A résumé of the results

anode by a direct current : Dr. G. Senter. When dilute obtained in the study of the velocity of chemical change solutions of sulphuric acid and of sodium hydroxide are in polymethylene derivatives is given.—Hydrolysis of ammonium salts by water : E. G. Hill. The constants

submitted to electrolysis at a potential below that at which

oxygen is evolved in the gaseous form, an oxidising agent obtained in the case of the salts of monobasic acids are

is formed in a very small amount at the anode. The subinversely proportional to the molecular conductivities of the

stance is very stable, and is not destroyed by boiling; it rids, and agree well with the values obtained for the strength of the acids by the various dynamical methods.

is not hydrogen peroxide. In the course of the experi

ments with dilute sulphuric acid, it was observed that In the case of dibasic acids, the constants are irregular.

traces of platinum went into solution from the anode, The addition of alkyl halides to alkylated sugars and glucosides : J. C. Irvine and Miss A. M. Moodie. The

although the average current density was only about

1:5 x 10-7 amperes per sq. cm. fruits point to the formation, during cooling, of oxonium rompounds of the sugar with alkyl halides, and the a-form

Dublin. of the aldose appears

to be

reactive than the Royal Dublin Society, June 19. - Prof. T. A. McClelland B-isomeride.-The following notes have been received since in the chair.--The absorption of B radiation by matter : the meeting :--Note on the preparation of ethyl acetone- Prof. J. A. McClelland and F. E. Hackett. As pointed dirarboxylate : E. Ormerod.-The interaction of nitro- out in a previous paper, the coefficient of absorption of formazvl, carbon disulphide, and potassium hydroxide. A B radium rays as usually measured gives little information contribution to the chemistry of the thiobiazalones and the to the stopping power of different types of atoms. Wanthates : E. Ormerod.-Aldehydrol and the hydrates of This arises from the fact that the secondary radiation of compounds containing a carbonyl group: W. M. Colles. B particles is important, and must be allowed for before Concentrated aqueous solutions of aldehyde acetone, formic, a true coefficient is obtained. The measurements in the acctie, monochloroacetic, and trichloroacetic acids present paper are made in such a way that this necessary cooled to low temperatures in a special apparatus. The correction can be applied. The results show that the following compounds of special interest were obtained :- quotient of this true coefficient of absorption by the density aldehidrol. CH.CH(OH), ; a hydrol of formic acid, possibly is not constant, but depends on the atomic weight of the n-fermic acid. HC(OH), i o-acetic acid, CH,C(OH),; and absorbing substance. The main feature is that the 0-munochloroacetic acid, CH,CIC(OH),.

quotient increases as the atomic weight increases; the rate Challenger Society, June 27.-Cant. Wilson-Barker in of increase is not, however, uniform, and there is evidence the chair. -A series of deep-water fish from the N.E. that the elements fall into divisions with respect to this Atlantic slope : Messrs. Holt and Byrne. The series in quotient corresponding to the chemical periods. This may cluded Chimaera mirabilis, Collett, Macrurus labiatus, be compared with the previous work by one of the present Koehler, and Scorpaena echinata, Koehler. Several of authors, showing that the emission of secondary B radiation the rarer species filled gaps in the known area of dis- is determined by the atomic weight of the substance acted tribution.-A photograph of so-called oily patches at sea, upon. supposed to be rich in plankton : Captain Wilson-Barker.

Paris. Nrw charts published by the society. Six of these, pre

Academy of Sciences. July 9.-M. H. Poincaré in the pared by Dr. Schott, showed the mean annual isotherms chair.- Remarks by M. Berthelot on his work “ Archéoof the ocean, and the seventh was a small blank chart of logie et Histoire des Sciences. "-Trypanosomiasis of the

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New SOUTH WALES. Laveran. The new species was obtained from a ram, in- Linnean Society, May 30.- Mr. Thos. Steel, president, oculated from the blood of a horse infected in the Bari in the chair.—The genus Cardiothorax, with descriptions region, and is named Trypan. cazalboui. This trypano- of new species of Australian Coleoptera, part ii. : H. J. some is clearly distinguished from neighbouring species by Carter. All workers in Australian entomology who are its pathogenic action upon animals.—The chlorides and precluded from an examination of types in European sulphates of rubidium and cæsium : M. de Forcrand. A museums find their difficulties increased by the want o! thermochemical paper.---The secondary alcohols of the information on many of the commoner species. The preoctane (CH2)2.CH.(CH2),.CH,: Louis Henry. A dis- sent paper is an attempt to clear up much of the confusion cussion on the relations existing between the boiling points that has existed as to the nomenclature, identification, and of the secondary alcohols and the position of the hydroxyl geographical distribution in one of the larger genera of the group in the chain.—The effect of breathing air containing family Tenebrionidæ, subfamily Helopides, viz. the genus from 5 per cent. to 10 per cent. of carbon : N. Gréhant. Cardiothorax.--Preliminary note on the geological history The effect of increasing the carbonic acid content of the of the Warrumbungle Mountains district: H. 1. Jensen. air from the normal amount to 5 per cent. is to set up It is shown in this note that the Warrumbungle Mounmore rapid breathing, but the composition of the gases of tains are the remnants of a dome-shaped mass of volcanic the blood renains nearly constant. When the proportion rocks dissected by arid agencies. The erosion has proof carbonic acid was increased to 10 per cent., the re- duced a land form similar to that described by Ida H spiratory movements were three times as fast as with Ogilvie under the new name of " conoplain (American pure air ; the oxygen in the blood gases was still constant, Geologist, July, 1905). It is also shown that this cono but the carbonic acid was increased from 38.4 per cent. to plain is surrounded by a peneplain dissected by arid 42.8 per cent.--A reflection heliometer : Milan Štefánik. agencies and base-levelled to the level of the Western --A preliminary measurement of the lines of the solar Plains.—Descriptions of new species of Australian Coleospectrum in the infra-red : G. Millochau. The results of ptera. part viii. : A. M. Lea. The paper contains dethe application of a method indicated in a previous note. scriptions of twenty-two new species and one new genera Measurements of 106 lines are given for wave-lengths (a blind one) of Staphylinidæ, a new genus of Pausside, 1 8025.5 to 1 9325.2.--The theory of ensembles : Jules a remarkable new genus of Prinidæ, the only known species König.–The measurement of the capacity and self-induc- of which occurs in ants' nests, an Inopeplus, a Pelonium tion of telegraph lines : M. Devaux-Charbonnel. Details (a genus of Cleridæ not hitherto recorded from Australia) are given of the methods used to prevent the interference four species of Lathridius, and a beautiful Lemodes.- New of parasitic currents. It was found that the capacity of Australian species of the family Agrionidæ (Neuroptera air lines is higher than their theoretical value, and varies Odonata): R. J. Tillyard. Eleven new species are added with the hygrometric state of the atmosphere.—The deter- to the Australian list, bringing the total for this family mination, in wave-lengths, of the photographed absorption up from twenty-eight to thiriy-nine. Seven genera ar bands of the colouring matters of the blood : Louis Lewin, represented, of which two have not before been recorded A. Miethe, and E. Stenger.-The action of the silent for Australia. Of the species described, ten are Dew 10 discharge on cyanogen : H. Gaudechon. Nitrogen is set science, and the eleventh has only been recorded before free and a solid body deposited, the latter not being merely from Central Africa, where it is common. a polymeride of cyanogen, since the values of n in the formula Cnn, varied from 4:4 to 5.0 in different experiments.--Amido-acids derived from the albumens : Albert

CONTENTS.

PAGE Morel. An account of the preparation of some substituted Sir Henry Roscoe's Reminiscences. By W. A. S. . 289 ureas of glycocoll, including glycocoll-urea, a mixed urea With Wires and Without. By Maurice Solomon 200 of glycocoll and leucine, and of glycocoll and tyrosin. | Theoretical Biology. By J. A. T. None of these compounds was capable of hydrolysis with Economic Zoology. By Fred. v. Theobald

293 digestive. ferments.-Condensations with anthranol : R. The Feeling for Nature

293 Padova.-The reduction of the primary unsaturated Our Book Shelf:alcohols of the fatty series by the metal-ammoniums : E. “ A Handbook of York and District,”_ T. S.

294 Chablay. With allyl alcohol, one molecule is converted

Smith : “Bacteria in Relation to Plant Discases, into sodium allylate and a second into propylene. The

Prof. R. T. Hewlett

294 reaction is quantitative, and forms a good method for the

Thomson :

“Outlines of Zoology."-F. W. H. 294 preparation of pure propylene.—The transformation of some Seton : " Animal Heroes; being the Histories of a secondary-tertiary a-glycols into ketones, and the trans- Cat, a Dog, a Pigeon, a Lynx, two Wolves, and a position of hydrobenzoin : MM. Tiffeneau and Dorlen

Reindeer.' R. L..

295 court.-The isomorphism of potassium chlorate and Marriott: "Some Facts about the weather

295 nitrate : Jean Herbette. It is shown in the case of these Letters to the Editor:two salts that the properties of mixed crystals in a series Osmotic Pressure. - W. C. D. Whetham, F.R.S. . :95 of isomorphous mixtures are not necessarily intermediate The Fertilisation of Pieris..-I. Henry Burkill 296 between those of the extreme terms of the series, the pure Australian Origins. (Illustrated.) By N. W. T. 296 salts.—The influence of the absorption of sugar on the Some Results of the “ Belgica" Expedition. (Illus. phenomena of germination of young plants : W. Lubi- trated.) By J. W. G. When fermentable sugars are absorbed by the Yellow Jack.

(Illustrated.) By Dr. J. w. w. plant, the latter behaves physiologically like a yeast placed Stephens

299 under aërobic conditions.-Variations in the nutritive ex- Scientific Work of the Survey of India changes under the influence of muscular work developed Notes. (Illustrated.) during mountain climbing : H. Guillemard and R. Our Astronomical Column:Moog.–The temporary disappearance of the trypanosomes Refecting Telescopes of Short Focus of nagana in infected dogs: Gabriel Roux and Léon The Astronomical Society of Canada Lacomme.—The geology of the Djebel Ouenza district, on Magnitudes and Places of 251 Pleiades Stars the borders of Tunis and Algeria : Pierre Termier.-The Elements and Ephemeris of Jupiter's Seventh Satellite 30 terrestrial magnetic inclination in prehistoric times : Paul Observations of Minor Planets and Comets . L. Mercanton.-The trajectories of electric corpuscles in Opening of a New Laboratory at the Rothamsted space under the influence of terrestrial magnetism, with Experimental Station . . applications to the aurora borealis and magnetic disturb- Recent Researches in Regional Geology. By ances : Carl Störmer.—The aurora borealis : P. Villard. G. A. J. C. -The supposed law of monthly distribution of earth- | Meteorological Reports . quakes: F. de Montessus de Ballore. The author con- Colouring of Guereza Monkeys. (Illustrated) cludes that earthquakes occur at any time of the year, and Electricity in Mines that there is no ground for supposing a maximum earth- University and Educational Intelligence quake frequency in any special month.

Societies and Academies .

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Ltd.,

For Laboratory, Scientific, and all other

purposes. COCOA NUT CHARCOAL SPECIALLY PREPARED. CALCIUM METAL, 1/- oz.; 12 - lb.

Price List on Application.

[graphic]

HARRINGTON BROS.,

Chemical Manufacturers and Dealers, 4 OLIVER'S YARD, CITY ROAD, LONDON, E.C.

MANUFACTURERS OF

LIQUID AIR AND LIQUID HYDROGEN.

High-Class Apparatus for Röntgen
Ray and High Frequency Work.

10", 12" & 14" INDUCTION COILS. PORTABLE HOSPITAL SETS,

SWITCHBOARDS, &c., &c.

Dr. HAMPSON'S AIR-LIQUEFIER is now made to a standard pattern, and numbers are in use in University Laboratories and elsewhere in various countries. The whole apparatus is neat and compact and its parts very easily moved; the Liquefier, without stand, being a cylinder 17 inches high and 8 inches in diameter.

It begins to liquefy air in from 6 to 10 minutes after the admission of air at from 150 to 200 atmospheres pressure, making over a litre of liquid per hour.

It requires no auxiliary refrigerant and produces a perfectly clear liquid which requires no filtering.

The operator has only one gauge to watch and one valve to control.

HYDROGEN LIQUEFIER to the designs of Dr. MORRIS W. TRAVERS for use in conjunction with Air-Liquefier.

Write for Illustrated Price List “H” to the Works :

TYSSEN ST., DALSTON, LONDON, N.E.

For Prices and Particulars apply to the Sole Makers :BRIN'S OXYGEN COMPANY LIMITED,

ELVERTON STREET, WESTMINSTER, S.W.

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