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versity to realise the need of better directed measures,” births remaining unvaccinated being 20.8 in 1899, 19-9 in there was a change of policy. The farmer's educational 1900, and 17.3. in 1901. The epidemic of small-pox which requirements were studied, suitable courses were devised, raged in London in 1901-2 again directs attention to the and research in his interests was begun. The success of danger of small-pox hospitals in disseminating this disthis changed policy is testified to by every chapter of the ease in their vicinity. Practically all the London cases report, and is strikingly shown by the material progress of were removed to the hospital ships moored in the Thames the institution. When the present director took charge in at Long Reach, opposite to which is the village of Purfleet, 1880 the buildings consisted of a dwelling house and two containing a number of unvaccinated persons, and an barns, worth about 1000l. ; the present buildings are worth excessive incidence of small-pox prevailed there attributable more than 60,oool. In 1881 the income of the agricultural to aërial conveyance of infection from the ships. The department was represented by the salary of the professor populations of Purfleet garrison and of the training ship and a grant of about 1000l. for experiments. In 1903 the Cornwall close by were, however, thoroughly vaccinated College of Agriculture had an income of 10,000l. for and re-vaccinated, and not a single case of small-pox administrative and teaching purposes, and of 6oool. for re- occurred in these communities, another instance of the prosearch; and in addition free instruction in languages, tective power of vaccination. The report by Dr. Bulstrode mathematics, and pure science was provided for agricultural on outbreaks of typhoid fever at Winchester and Southstudents in other departments of the university.
ampton attributable to infected oysters has already been But the “better directed measures" of the regents of noticed in these columns (see NATURE, vol. Ixviii. p. 303). Wisconsin University have had an influence outside the An outbreak of throat illness at Lincoln attributable to College of Agriculture. At the jubilee of the uni- inilk was the subject of investigation by Dr. Mair. versity last summer, Prof. Chamberlin, of Chicago, de- Although bearing considerable resemblance to scarlatina livered an address on “ The State University and Research.' the outbreak was conclusively proved not to be one of this In this address it was argued that “the fundamental pro- disease. From a few of the cases a yeast was isolated from motion of education lies in an increase in the intellectual the throat by Drs. Klein and Gordon which proved pathopossessions of a people, and in the mental activities and genic to mice, and reproduced on inoculation some of the attitudes that grow out of the getting, the testing, and features of the human disease. the using of these possessions ” (Experiment Station Record, Dr. Bulstrode's report on the excessive incidence of xvi., 3). As an illustration of the effects of properly directed typhoid fever at Bridgend (Glamorgan) supplies an instrucresearch on a community, the work of the Wisconsin Experi- tive instance of the superiority of properly conducted ment Station was referred to in the following words :- bacterioscopic examination over chemical analysis for de“It was my privilege to compare the Agricultural con- tecting a slight degree of pollution of water supplies. ventions of this State at two periods separated by a decade, Turning to the scientific investigations carried out for the within which the experiment station became a potent in- board, it is difficult in a short space to give adequate notice fluence. The dominant intellectual and moral attitude of of their contents and importance. the earlier period was distinctly disputatious and dogmatic. Dr. Klein records some observations on the bacteriological ... In the second period the dominant attitude was that diagnosis of plague, and the manifestations of this disease of a scientific conference. ... The whole was character in the rat. He regards the natural disease in this animal ised by a notable approach to the methods of approved as one of slight virulence and feeble infectivity, and conscientific procedure. The intellectual and moral contrast of siders that it is spread from rat to rat mainly through their the two periods was one of the most pronounced expressions fighting, propensities. Dr. Klein, in continuation of his of advance in the higher education in a great mass of people study of agglutinins, also details experiments made to test in the midst of a practical life which it has ever been my the ability of two or more agglutinins to coexist in the privilege to witness."
blood of the same animal. Cultures of B. typhosus and The educational value of research may be traced here and B. enteritidis (Gärtner) injected simultaneously in an animal there in our English shires, where agricultural experts were found to produce agglutinins corresponding to each have won the confidence of farmers by conducting well of these microbes. But if the cultures were injected not devised experiments in their midst. But our education simultaneously, but in sequence, the agglutinin of the first authorities still view research with suspicion, and one finds microbe was to a large extent replaced by that of the second agricultural experiments, for example, labelled demon- microbe injected. strations " for no other reason than to satisfy the county Dr. Sidney Martin has continued his investigations of the auditor! One wishes that education committees, toxic substances elaborated by diarrhæa-producing bacteria, entrusted as they are with funds for the encouragement dealing in the present instance with those of the Proteus of agriculture, would study the “ better directed measures vulgaris. He finds the toxin to be proteid in nature, but which have been so successful in Wisconsin, and not in not albumose, and readily extractable from the bacterial Wisconsin only, but throughout the States. They would cells by distilled water. An injection of the toxin produced probably find in the American institutions confirmation of diarrhæa with depression of temperature. a view expressed by Prof. Chamberlin in the above quoted The report by Dr. Mervyn Gordon on a bacterial test for paper.
the estimation of pollution of air is one of great interest He remarks that while it is a good thing to provide and importance. First examining the natural bacterial technical instruction in agriculture, it is “a much higher flora of the saliva, he found that a streptococcus having and truer function to develop the science of agriculture, to the power of producing acid in glucose and in lactose media, increase the intellectual activity of every farmer, to improve acid and clot in milk, and of changing the colour of an the agricultural art on every farm, and by such improved anilin dye neutral red, was extremely abundant, no less than art to furnish better and safer food to every citizen."
10,000,000, and in some cases 100,000,000, being contained T. H. MIDDLETON. in 1 c.c. of saliva, and by using a neutral red broth and
incubating anaërobically minute traces of saliva may be detected. By placing, therefore, dishes of neutral red broth
at varying distances from a speaker, and subsequently inSCIENTIFIC REPORTS OF THE LOCAL
cubating and examining, the distance to which particles of GOVERNMENT BOARD.'
saliva may be carried can be ascertained. It was found
that particles of saliva were present in the air no less than AS is customary, the report under notice is divided into 40 feet in front of and 12 feet behind the speaker during
three portions, (1) an excellent digest by the principal loud speaking. Dr. Houston has carried out an exhaustive medical officer, Mr. Power, of the contents of the volume ; study of the bacterial flora of human dejecta, with special (2) statistics of vaccination and details on outbreaks of reference to the colon bacillus. He finds that not less than disease investigated by the board's inspectors; and (3) the 90 per cent. of the total number of this organism present reports of scientific investigations carried out for the board, have the characters of the typical B. coli. and of the board's vaccination department.
The same observer details the results of the chemical and It is reassuring to learn that abstention from vaccin: bacteriological examination of Tunbridge Wells deep well ation seems to be steadily diminishing, the percentage of waters, and, in conjunction with Dr. Klein, reports on the 1 Supplement cnntaining the Report of the Medical Officer for 1902-23.
use of nutrose agar for the identification of the typhoid (Thirty-second Annual Report of the Local Government Board, 1902-03.) bacillus.
The remainder of the volume is occupied with reports of
SOCIETIES AND ACADEMIES. scientific investigations carried out in the board's vaccine
LONDON, laboratories by Dr. Blaxall, Mr. Fremlin, and Dr. Green, and a number of excellent plates illustrating the various
Royal Society, Novrml er 17, 1904.-" Theory of Amphoresearches.
R. T. HEWLETT.
teric Electrolytes." l'art ii. By Prof. James Walker, F.R.S.
In a previous paper (see NATURE, April 7, 1904, vol. Isis. UNIVERSITY AND EDUCATIONAL p. 545) it was shown that it is possible to express the conINTELLIGENCE.
centrations of the ions present in the aqueous solution of CAMBRIDGE.-During the first fortnight of last month
an amphoteric electrolyte in terms of the concentration of
the un-ionised substance, the dissociation constants of the some four hundred candidates were being examined at
substance acting as acid and as base respectively, and the Cambridge for entrance scholarships. The majority of the now combined into two groups, the
ionisation constant of water. larger colleges are
In the present paper the
values for the aminobenzoic acids have been re calculatet, larger of which includes Pembroke, Gonville and Caius,
and a closer concordance obtained between theory and Jesus, St. John's, Christ's, King's, and Emmanuel, whilst
experiment than was apparent in the former calculations. the smaller comprises Peterhouse, Clare, Trinity Hall,
As a knowledge of the concentration of the un-ionised puuTrinity, and Sidney Sussex. Queens' examined alone, and
portion of an amphoteric electrolyte in solution is of fundaa week later than the two large groups. As a result of the examination of these thirteen colleges a sum amounting is given of the values of this magnitude with varying con
mental importance in the application of the theory, a table 10 a little more than 6oool. was awarded in scholarships stants and total concentration. From this table it appears to 108 successful candidates. This total does not include
that when the acidic and basic constants approximate in the sum, which amounted to some hundreds of pounds, value, dilution has little effect on the total ionisation of an given in exhibitions, sizarships, and subsizarships, and in amphoteric electrolyte, although the proportions of the two certain extra scholarships offered by some of the colleges positive ions, and consequently the molecular conductivity, after the result of the first selection had been published.
may vary greatly. It is interesting to note the number of scholars and the For a series of amphoteric electrolytes with a constant value of the scholarships given in the different subjects. product kako. where ka' is the acidic and ks the basic on Out of a little more than 6oool. awarded to 108 candidates,
stant, it may be shown that the simultaneous alteration of classics gained 28501., divided amongst 49 scholars, mathe- 1/ka, kj. and v in the same ratio has no effect on the total matics, with 34 scholars, earned 19451., and the natural ionisation. From this and the preceding result it may be sciences divided 990l. amongst 20 successful competitors, deduced that in such a series, beginning with an infinitely whilst candidates in history and oriental and modern small value of ks. the total ionisation falls off as ka languages were successful in only five instances, and these diminishes and kn increases, the fall being at first rapid, 5 divided amongst them 2201.
thereafter becoming slower until, through a comparatively
long range, it is practically constant at the minimum value, Among the papers down for reading at a conference of which is actually reached when ka= ks. At this point the the National Federation of Head Teachers' Associations,
substance is absolutely neutral. As I still further arranged to be held at Cambridge yesterday and to-day, is diminishes, and ko correspondingly increases, the ionisaone by Sir Lauder Brunton, F.R.S., on
** The Proposed
tion begins to increase, very slowly at first, and the subNational League for Physical Education and Improvement. stances considered become more and more basic in character. Science announces that Mr. E. D. Adams has given
Finally, the ionisation increases rapidly, and we deal at 10,0001. to Columbia University for the foundation of a last with a practically simple base for which lia is infinitely research fellowship in physical science. The gift is accom
small. panied by a valuable collection of scientific apparatus to
The theory has been applied to cacodylic acid and to be allotted to the electrical, physical, and psychological asparagine with satisfactory accordance with the experilaboratories of the university.
mental results. Tue prospectus for 1904-5 of the Colorado School of December 1, 1904.--"On Chemical Combination and Mines shows that much importance is attached in the metal
Toxic Action as exemplified in Hæmolytic Sera." By Prof. lurgical courses to visits arranged for the students to works
Robert Muir and Carl H. Browning. where typical processes in metallurgy can be seen in oper
This paper deals with the mode of action of complements ation under commercial conditions. Immediately after
-those comparatively labile bodies which are present in the taking up the study of metallurgy, trips extending through
serum of normal animals, and which are the active sub out the junior and senior years are begun. These
stances in hæmolysis and bacteriolysis. Towards red corcxcursions, intended to illustrate the lectures, are taken while
puscles treated with the suitable immune-body (the antithe particular topics are under discussion, and tend to aid
substance developed by the injection of such corpuscles into greatly in an appreciation of approved machinery and
an animal of other species) a complement may be regarded practice. By means of outlines with which the student is
as a toxin, and already many points of similarity in the provided, which he is required to fill out, care is taken
constitution of toxins and complements have been brought
forward. The hæmolytic dose of a particular complement that all the important points in connection with each plant visited are studied and reported upon.
varies greatly in the case of different corpuscles, when each
variety is treated with the corresponding immune-body, The following recent educational appointments and the question dealt with in this communication is whether announced :-Dr. Foster P. Boswell assistant in psychology such variations in dosage are due to variations in the comand Mr. Edwin Lee Norton instructor in philosophy at bining affinities of complements or to variations in their Wisconsin. Miss Florence Fitch associate professor of toxic action. For example, the hæmolytic dose of guineaphilosophy in Oberlin College. Prof. F. S. Luther, who pig's complement is ten times greater in the case of its own occupies the chair of Trinity College, Hertford, Conn., has corpuscles than it is in the case of the ox's corpuscles, and been elected president of the college. Dr. J. Stebbins has the writers show by quantitative methods that in the former been appointed assistant professor of astronomy, and Mr. case the whole of this large dose of complement enters A. H. Wilson instructor in mathematics, at Illinois; Dr. into combination with the guinea-pig's corpuscles (through H. B. Evans assistant professor of mathematics at the medium of the immune-body); there is no want of comPennsylvania ; Mr. C. P. Weston assistant professor of bining affinity of complement, but its toxic action is slight mechanics, Mr. H. R. Willard instructor in mathematics, A similar result was obtained with each of three sera in. and Mr. R. K. Morley tutor in mathematics, at Maine ; Mr. vestigated-a relative non-sensitiveness of the corpuscles of W. D. Cairns associate professor of mathematics, and Mr. an animal to its own complement; in one case there was J. R. Luckey assistant in mathematics and physics, at also a deficiency in the combining power of the complement. Oberlin ; Mr. E. D. Grant associate professor of mathe- All the results go to emphasise the importance of disa matics at the Michigan College of Mines ; Dr. K. Schmidt tinguishing these two factors in the action of a complement, professor of mathematics and astronomy at Lake City, which correspond with the two chief atom groups desigFlorida.
nated by Ehrlich "haptophore," or combining, and
“ zymotoxic." As bearing on the general biology of the Adolphe Minet.—Electrolytic analysis of cobalt and nickel : subject, the following may be quoted :-“No one has yet Dr. F. Mollwo Perkin and W. C. Prebble. Cobalt.succeeded in producing an anti-substance or immune-body The aim of the experiments was to obtain bright deposits by injecting an animal with its own corpuscles or cells of the metal that should be quantitatively accurate. The such a body as with the aid of complement would produce most satisfactory results were obtained with a solution condestruction of these cells. This is manifestly a provision taining an alkali phosphate and a little phosphoric acid, against self-poisoning, and Ehrlich has applied to it the the latter to prevent the precipitation of the double term autotoxicus horror. The results which we have
sodium cobalt phosphate. Nickel.-Similar solutions brought forward, if they were found to hold generally, tried for nickel deposition. In this case good would go to show that even if some substance should appear results were obtained with a borate solution, while a phoswhich acted as an immune-body, there is a provision where- phate solution, which gave good figures in the case of by the complement of an animal should produce compara- cobalt, was not at all satisfactory.(1) The electrolytic tively little harmful effect."
preparation of tin paste ; (2) note on the electrolytic recovery Chemical Society, December 14, 1904 – Prof. W. A.
of tin : F. Gelstharp. The electrolytic process is less costly Tilden, F.R.S., president, in the chair.—The following
than other processes in spite of the low current efficiency (50 papers were read :-Hydrolysis of ammonium salts : V. H. per cent.), and it can be worked continuously. The process Veley. It is shown that when aqueous solutions of
consists in dissolving anodes of tin, roughly cast from comammonium salts are heated the evolution of ammonia and
mercial ingots, in dilute hydrochloric acid, and depositing the concomitant acidity of the solutions are due not to dis
the metal in the form of sponge on kathodes of block tin sociation, but to hydrolysis.—The viscosity of liquid
or tinned iron. In the second note an experiment is demistures, part ij. : A. E. Dunstan. The author's con
scribed that has some bearing on the conditions necessary clusions, given in a previous paper (Chem. Soc. Trans., for electrolytically stripping tin plate. 1904. lxxxv., 817), are confirmed by the present series of
for number of binary mixtures containing hydroxy-compounds.-The diazo
Academy of Sciences, December 26, 1904.-M. Mascari, reaction in the diphenyl series, part ii., ethoxybenzidine :
in the chair. -On the theorem of areas and conservative J. C. Cain. The author has examined the action of heat systems : Paul Painlevé.—Groups of negative bands in on the solution of the diazonium salt prepared from ethoxy
the air spectrum with a strong dispersion : H. Deslandres. benzidine, and has shown that the diazonium group, A detailed examination under high dispersion of the ultraadjacent to the ethoxy-group, is normally substituted by
violet band 1 3914. This band is intense round the hydroxyl, whilst the other remains intact.-The sulphate
negative pole in vacuum tubes filled with air or nitrogen, and the phosphate of the dimercurammonium series : P. C. and it constitutes nearly exclusively the kathode light Rây. When dimercurammonium nitrite, NHg,NO,, is
of gases; it is found in the aurora borealis and in treated with an oxyacid, the dimercurammonium complex the radium light.—On the constitution of the sodium remains intact. In this way, the author has succeeded in
salts of certain methenic and methinic acids : A. preparing the sulphate and the phosphate of the series.
Haller and P. Th. Muller. A differential optical method i method for the direct production of certain aminoazo
has been employed in this work, comparing the molecular compounds : R. Meldola and L. Eynon. The authors
refraction of the sodium salt with its corresponding acid, have found that most diazotised amines when treated in
so far as possible in the same solvent and at equal conaqueous solutions with a strong solution of sodium dichrom- centrations. The substances studied included cyanacetic ale give crystalline precipitates of diazonium chromates. ester, propionyl-cyanacetic ester, malonic and cyanomalonic These chromates are more or less explosive when dry, and esters, malonitrile, and cyanocamphor. The results init is suggested that some of them might find technical
dicate that all the sodium salts examined have a different application high explosives.--The combination of constitution from that of the generating acid, and hence mercaptans with olefinic ketonic compounds : S. Ruhe
that the latter should be classed as pseudo-acids.-On mann.-Studies in optical superposition, part i. : T. S.
new geological discoveries in the Soudan : A. Patterson and F. Taylor. Menthyl acetate, l-menthyl de Lapparent. The fossils found present a fresh proof d-tartrate, and l-menthyl diacetyl-d-tartrate have been pre
of the existence of an arm of the sea penetrating into the pared and their rotations examined between oo and 100°. Soudan.-On the new Giacobini comet: M. Giacobini. It is shown to be possible by analogy to trace the separate
Observations, the elements and ephemeris of the new effects of the different active groups composing menthyl
comet, discovered on December 17, 1904, at the Observtartrate and its diacetyl derivative.
atory of Nice.—The provisional elements of the Giacobini
comet (December 17, 1904): G. Fayet and E. Maubant. Linnean Society, December 15,1904. - Prof. W A.II. rdman, Observations of the Tempel comet (1873, 2) made at the F.R.S., president, in the chair. -The ecology of woodland Observatory of Algiers with the bent equatorial of 31.8 cm. plants in the neighbourhood of Huddersfield : Dr. T. W.
aperture : MM. Rambaud and Sy.-On the stability of Woodhead. The plant-associations of this portion of west aërostats fitted with steering apparatus : G. A. Crocco. Yorkshire having been dealt with on broad lines by Smith
---On the fragility of certain steels : A. Perot and Henri and Moss, the author has endeavoured to carry the study Michel Levy. A study of the effect of shock on notched a stage further by paying special attention to a very limited test-pieces, a photographic method of recording the results area. A small wood (Birks Wood, near Huddersfield) was being adopted. On the kathode rays and the laws of Framined in great detail, and the main factors determining electromagnetism : P. Villard. Diagrams are given showthe distribution of the more important plants of the under- | ing the comparison of the theoretical curves with those growth studied, such as soil, shade produced by the actually obtained, and it was found that none of the experidominant tree, moisture, exposure, and wind. The results
mental results present anomalies requiring the assumption thus obtained were then 'tested by an examination of the
of a magnetic friction.-On the thermcelectricity of the Woodlands in an area of 66 square miles to the south and
aluminium alloys : Hector Pécheux. Alloys of aluminium west of Huddersfield ; special attention was also paid to the
with tin, lead, bismuth, magnesium, antimony, and zinc distribution of these species beyond the limits of the wood- were studied at 100°, 180°, and 380° C.-On the theory un lands.--Experimental studies in heredity in rabbits : C. C.
magnetism : P. Langevin. An application of the hypoHurst. The studies were based on breeding between a thesis of electrons to the explanation of the phenomena of Belgian "hare" and an albino Angora ; the second gener- para- and dia-magnetism.--On a phenomenon of retinal ation showed but little outward variation from the Belgian adaptation relating to visual perception of faintly illuminparent, but the third generation displayed great diversity | ated colours : A. Polack-On the reduction by amorphous of colour--albino, grey, black, and variegated. These boron of the oxides of manganese, and on the preparation Peperiments tallied in a very close degree with the numbers
of a new boride of manganese : Binet du Jassonneix. Fipected according to the Mendelian laws.
The composition of the new boride studied is represented Parad av Society, December 19. 1904.—Mr. J. Swinburne, by the formula MnB. It fits into the series of well defined vice-president, in the chair.-The electric furnace: its and crystallised borides FeB, NiB, and CoB prepared by origin, transformations, and applications, partij. : M. M. Moissan by means of the electric furnace.-On quadri
valent oxygen : E. E. Blaise. Ethyl ether and magnesium
FRIDAY, JANUARY 6. iodide form a well defined, crystalline compound from
INCORPORATED SOCIETY OF MEDICAL OFFICERS OF HEALTH, at
The Report of the Inter-Departmental Committee on Physical Degenera which the ether is only driven off when heated to tempera- tion : Sir Lauder Brunton, F.R.S. tures approaching 190°C. Its probable constitution is GEOLOGISTS' Association, at 8.-The Third Issue of the British Associagiven as
tion Geological Photographs: Dr. C. G. Cullis.
ROYAL GEOGRAPHICAL Society, at 3. 33. - National Antarctic Expedition :
MONDAY, JANUARY 9.
SOCIETY OF CHEMICAL INDUSTRY, at 8.-Some Chemical Aspects of the
St. Louis Exhibition : Walter F. Reid. in which the oxygen must be tetravalent. If this substance
Royal GeogrAPHICAL Society, at 8.30.-Mr. Reginald Enock's Jour is treated with an ether containing an alkyl group of higher
neys in Peru : the President. molecular weight, as amyl ether, the latter replaces the
TUESDAY, JANUARY 10. ethyl ether, and a vigorous reaction ensues.-On the re- INSTITUTION OF Civil ENGINEERS, at 8.-The Recent Visit to be duction of the anhydrides of the dibasic acids : G. Blanc. United States and Canada : Sir William Henry White, K.C.B. (T.
Address will be repeated on the following day at 3. 30 p.m.) The anhydrides of pyrotartaric, aa-dimethylsuccinic,
WEDNESDAY, JANUARY 11. aa-dimethylglutaric, BB-dimethylglutaric, and camphoric
SOCIETY OF PUBLIC ANALYSTS, at 8.-Brandy : Otto Hehner. acids, when reduced with sodium and absolute alcohol, give
THURSDAY, JANUARY 12. good yields of the corresponding lactones.-A general MATHEMATICAL SOCIETY, at 5.30.-Generational Relations for the Abstract method for the synthesis of aldehydes with the aid of sub- Group simply Isomorphic with the Abstract Group LF (2, pr}; Dr W. stituted glycidic acids : Georges Darzens. A mixture of
Bussey.-On a Class of Expansions in Oscillating Functions: Prof.
A. C. Dixon.-- [sogonal Transformation and the Diameter Transformamonochloracetic ester with any ketone is treated with sodium tion: H. L. Trachtenberg.-A Generalisation of the Legendre Poly ethylate in powder. The acid formed by this condensation nomial : H. Bateman. -Current Flow in Rectangular Conductors : is unstable, and splits up easily into carbon dioxide and an
H. Fletcher Moulton.-Basic Generalisations of some well know
Analytic Functions : Rev. F. H. Jackson. aldehyde of the type RR'CH-CHO, where the original ketone was RR' : CO. The reaction has been applied to a considerable number of ketones and found to be quite general.-On the diastatic coagulation of starch : A.
PAGE Fernbach and J. Wolff. It is shown that the diastatic
Modern Optical Methods. By Prof. G. H. Bryan, coagulation of starch is only possible if it is in a state of
F.R.S. liquefaction, this being produced either by a liquefying American Cytology. By H. H. D.
218 diastase or artificially. –On the combustion of sulphur in Physical Research at Leyden
219 the calorimetric bomb : H. Giran. The heat of combustion
Practical Silicate Analysis
219 of sulphur has been determined in the Berthelot bomb at
Our Book Shelf :pressures varying between 2-5 and 45 atmospheres, with
Lassar-Cohn and Tingle : “ Application of some the unexpected result that the heat of formation of sulphur
General Reactions to Investigations in Organic dioxide increases with the pressure. This result is regarded
Chemistry.”—J. B. C. as being possibly due to the formation of the persulphuric Leonard and Salmon : “A Further Course of Practical anhydride of Berthelot.-On the electrical conductivity of
220 colloidal solutions : G. Malfitano. In order to eliminate Eichhorn : “Die drahtlose Telegraphie” the effect possibly produced by the presence of minute traces
Campbell: "Notes on the Natural History of the Bell of electrolytes in solution, the conductivity of the colloidal
Rock.".-R. L. solutions was taken both before and after filtration through
Bedding : “ The British Journal Photographic a thin film of collodion, it having been shown by pre
Almanac, 1905 liminary experiments that solutions of pure electrolytes Letters to the Editor :undergo no appreciable change after such filtration. It
Mean Temperatures of High Southern Latitudes. was found that the conductivity due to the fine particles Prof. Julius Hann in suspension was practically nil.-On the comparative pro- Reversal of Charge from Electrical Induction duction of alcohol and carbonic acid during fermentation : Machines.-George W. Walker . M. Lindet and P. Marsais. The ratio of alcohol to
Fishing at Night.-F. G. Aflalo
221 carbonic acid has been followed throughout the whole The Cost of Chemical Synthesis. . R. J. Friswell course of a fermentation, the effect of varying temperature “Bastard” Logwood.-S. N. C. being also studied.--Study of calcium carbide used as an
Intelligence of Animals.-Dr. F. J. Allen explosive in mining work : Marcel P. S. Guédras. The A New Contribution to Assyrian History. (Illuscartridge used consisted of a charge of calcium carbide
trated.) separated by an insulating membrane from water. The
Seismology in Japan. (Illustrated.) membrane is broken by a cap controlled electrically, and The Founder of Australian Anthropology. (Illus. after five minutes the explosive mixture is fired also by
trated.) By A. Ernest Crawley .
223 electrical means. The explosion takes place in a manner Changes Upon the Moon's Surface.' (pilustrated) well adapted for mining work.-On the histology of the By Prof. William H. Pickering myocardium in the primitive molluscs : P. Vigier and Fr.
Sir Lowthian Bell, Bart., F.R.S. Vies.-Intranuclear 'fat in the suprarenal capsules of Notes mammals : P. Mulon.-On the migration of glucosides in Our Astronomical Column :plants : W. Russell.—On the destruction of the winter egg
Another New Comet (1904 e).
233 of Phylloxera by lysol : G. Cantin. An account of experi- Comet 1904 d (Giacobini)
233 ments demonstrating the practical efficacy of a i per cent. Observations of Leonids at Harvard, 1904 solution of lysol against the disease.-On the mineral 1 ight-curve of 8 Cephei species of arable earth : A. Delage and H. Lagatu.— The Structure of the Third Cyanogen Band geology of Sahel, Algeria : General de Lamothe.The
New Refaction Tables .
Bibliography of Contemporary Astronomical Works
Geological Notes. (Illustrated'
Agricultural Education and Research. By Prof. RØNTGEN Society, at 8.15.-Description of an Automati: Vacuum Pump:
T. H. Middleton C E. S. Phillips. (The apparatus will be shown at work.)-Exhibition Scientific Reports of the Local Government Board, of a Method by which Strongly Adherent Films of Aluminium may be applied to Glass.-A Note on the Coloration of G'as, by Radium University and Education al Intelligence
By Prof. R. T. Hewlett
Diary of Societies
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