« PreviousContinue »
hundred feet higher than Kiyanja and situated north-west Prof. Hewlett and Dr. de Korté (London) read a paper of it. They have no connection with the Mubuku Glacier." on a beri-beri-like disease occurring in monkeys. The facts
Mr. Freshfield finds that a rough sketch plan of the observed suggested that beri-beri is an infective disease snowy group, sent by Signor Sella, coincides closely with due to a protozoan parasite, and conveyed by urinary inthe diagram of Lieut. Behrens, R.E., published in the fection. Dr. Ruffer (Egypt) detailed observations on the Geographical Journal for July last, and concludes that occurrence of organisms indistinguishable from the cholera " there
little doubt that the highest summits vibrio in persons who had not been in contact with measured by our engineers are identical with the Duke of cholera. the Ibruzzi's Ruwenzori. Hence the height of the Prof. Woodhead (Cambridge) stated that he had found Ruwenzori range may be taken as 16,625 feet.
opsonins in varying quantity in different milks, facts The chief topographical discovery made by the Italian suggestive of certain lines with regard to treatment. expedition, apart from its mountaineering successes, seems A combined discussion between the sections of physiology to be that the northern fork of the Mubuku, called by and medicine on over-nutrition and under-nutrition, with Signor Sella the Bugiogo, is of hitherto unsuspected special reference to proteid metabolism, was opened by importance. Its stream flows round a bend, which conceals Prof. Chittenden (Yale). As is well known, Prof. its sources from the lower valley. Beyond this lies a basin Chittenden suggests that half the proteid usually regarded penetrating far into the heart of the chain, at the head of as necessary to support physiological equilibrium is all which, and on the actual watershed, the highest peaks that is required. Prof. Halliburton (London) did not think stand.
that the experiments were conclusive, and suggested that
the minimum diet of Prof. Chittenden did not leave any THE TORONTO MEETING OF THE BRITIsh margin for that “reserve force" so necessary to ward off
attacks of disease. It might be that in the excess of MEDICAL ASSOCIATION.
proteid beyond that required to maintain physiological THE annual meeting of the British Medical Association, equilibrium there might be traces of substances which
held on August 21-25 at Toronto by invitation of the yielded this reserve force. Dr. Robert Hutchison (London) Canadian Branch, under the presidency of Dr. Reeve, the
considered that the proteid question could only be solved dean of the medical faculty of the university, was
by cooperation between physiologists and physicians. We marked success. The city is a fine one, and the university wanted to know, not the proteid minimum, but the proteid buildings in the Queen's Park are admirably adapted for optimum. There was a danger in sailing too near the the work of congress, combining convenience and
wind; we could get along with one lung or one kidney, beautiful surroundings. About 1600 members and visitors but two of either organ were preferable. High feeding is attended, the British contingent numbering 200 or there responsible for cure in tuberculosis and neurasthenia. abouts. Canadian hospitality was lavish, and we all carry The address in surgery was delivered by Sir Victor back pleasant memories of our visit to this great country: Horsley, who took as his subject the technique of operIn addition, good work was done, and the attendance at ations on the central nervous system. He showed how, bu the numerous sections was well maintained.
means of Prof. Vernon Harcourt's inhaler, chloroform A combined meeting of the sections of physiology and could be administered in known amount up to 2 per cent., pathology discussed the pathology and physiology of the Cell nucleus. The discussion was opened by Prof. Adami, chloroform could be reduced to 0.5 per cent., and that the
that during some period of the operation the amount of of McGill, in a paper giving an excellent survey of the administration of oxygen stopped venous oozing. subject. The conclusions formulated were that (1) the
The Senate of Toronto University conferred the honorary nuclear matter conveys and determines, or controls, the
degree of LL.D. on, among others, Sir W. Broadbent, inherited peculiarities of the individual, this conveyance Bart., Sir Thomas Barlow, Bart., Sir James Barr, Sir being through matter contained in the chromatin loops or
Victor Horsley, Prof. Clifford Allbutt, Prof. Halliburton, chromosomes, while it may be that these individual loops,
Dr. Donald Macalister, and Prof. Aschoff, of Freiburg. varying among themselves, determine particular conditions ;
R. T. HEWLETT. (2) the nucleus is essential, not merely for the vegetative activities, but also for the higher metabolic activities of the cell and their due coordination ; (3) the nucleus is not
A LARCH SAWFLY IV CUMBERLAND. merely the vegetative centre of the cell, but is involved in its functional activities ; (4) the higher syntheses, those THE Board of Agriculture and Fisheries recently directed associated with growth and those governing specific attention in the Press and its journal to the attack cellular enzyme actions, are determined and initiated by of the sawfly (Nematus erichsoni, Hartmann) upon larches. the nuclear matter ; (5) the nucleus is the centre or source
So far, serious damage has only been reported to of the higher cellular activities, and the nuclear material the Board from Cumberland, where the health, if not possesses in itself potentialities superior to those of any the lise, of an extensive plantation is said to be in danger. ordinary constituent of the cell body ; (6) the presence of This insect is commoner than is supposed, but does not, as preformed cytoplasm is essential for the continued exist- a rule, occur in large numbers in this country.
There are ence and growth of the nucleus--each becomes essential very few collectors of these insects, hence we are apt to for the continued existence of the cell as a whole.
look upon species as rare which really have a wide disDr. Ford (Johns Hopkins University) read a paper on tribution. an antitoxin for poisonous fungi. He concluded that the Cameron, in his work British “ Phytophagous toxic agent of the amonita was of the nature of a gluco- Hymenoptera (vol. ii., p. 51, 1885), only records the side, and that an antitoxic serum could be prepared with insect from an unknown locality. Dale mentions it as it. It was pointed out in the discussion that this idea was occurring at Glanvilles Wootton. It has also been seen somewhat revolutionary, as hitherto it had been impossible on larches near Esher, at Wye, Great Staughton, and to obtain with glucosides an antitoxic substance.
Budleigh Salterton. It is widely distributed over Europe, Several papers
Dr. Clowes where it is now and then sufficiently abundant to become (Buffalo) had found that in experimental cancer in mice harmful, especially in Germany. Hagen also records it spontaneous recovery often occurred, and that such animals from the United States. are immune to further inoculation. , This was confirmed The adult sawfly has a black thorax, the abdomen red, by Dr. Bashsord (London), who stated that there is no with the basal seventh and ninth segments black. The evidence that cancer is on the increase, nor that it is legs are dull reddish, with most of the tibiæ white, and endemic in districts. He had never obtained any trans- the posterior feet and apex of the femora black. In length ference by mere contact, i.e. cancer is not contagious. it is about half an inch. The male has not, apparently, Prof. Gavlord (Buffalo) detailed some remarkable instances been described. which seemed to show that certain malignant tumours in The larvæ are nearly three-quarters of an inch long rats and mice are contagious. As a result of the dis- when mature, and feed upon the leaves from the beginning cussions on cancer, it is noteworthy that the parasitic of July to the end of August. In colour they are shiny grey theory of the origin of cancer seems almost to have been or dark grey, with the back darker grey except on the abandoned by pathologists.
second segment. The skin is covered with short, black
tubercles, and the spiracles show as brown spots. The the Black Sea, and to assign to it the specific name relicta, legs are spotted with black, and the head is shiny black. The author points out the differences between it and
When mature the larvæ fall to the ground and spin their Ph. communis, and urges that it arose in the Black Sea cocoons amongst moss, grass, &c., beneath the trees. The area as a direct descendant of the Miocene type. Phocæna cocoons are more or less cylindrical in form and brown is absent from the Mediterranean, while the two dolphins in colour. Many may occur close together. Fortunately found with it in the Black Sea, Tursiops tursio and these larvæ are preyed upon by several hymenopterous Delphinus delphis, abound there, and Herr Abel is thus parasites. It is probably these that cause its sudden dis
supplied with additional grounds for his contention. He appearance in localities where it has occurred. It is, never
also describes (p. 393) a Miocene transitional form between theless, as the Board of Agriculture advises, “ of the utmost Halitherium and Metaxytherium. importance that outbreaks should be discovered at an early
Passing to the primates, we note that Prof. Rzchak stage so that they may be suppressed while still of re
(Verhandlungen, ibid., 1905, p. 329) gives a preliminary stricted extent ”-an axiom that applies to all insects and
account of a lower jaw belonging to a being of the Spr. fungi that are likely to cause harm to man's crops, trees,
and Krapina type, from Ochos, near Brünn in Moravia. or stock.
Every addition to our knowledge of this early type of The Board is preparing an illustrated account of this
man in Europe, Wilser's Homo primigenius, is to be insect, which will be published in the October issue of
welcomed, especially as it seems not so long ago when its journal. Many such isolated outbreaks of insect pests the Neanderthal calvarium was the sole representative of of greater importance might with advantage be treated
The features shown by the lower jaw of a child in a similar manner.
F. V. T.
found in a cave at Shipka, and hitherto regarded as in ceptional, are interestingly repeated in that of the adult
from the Ochos cave. SOME RECENT PALÆONTOLOGICAL
T. Fuchs (ibid., p. 198) defends the organic character PAPERS.
of the honeycomb-markings known as Palæodictyon, in
opposition to the views of Capeder in 1904, who reproduces DURING the wide range of field-observation covered by the Austrian Geological Survey, numerous
artificially a fairly similar structure. localities for fossils come to light, while the collections
Prof. Yokoyama sends a paper on Mesozoic plants from
Nagato and Bitchu (Journal of the College of Scienir. brought to Vienna from outside the Empire furnish the members of the Reichsanstalt with rich material for com
Imperial University, Tokyo), illustrated by three beautiparison. R. J. Schubert (Jahrbuch der k.k. geol.
fully executed plates. The work confirms the author's Reichsanstalt, 1905, p. 613) has continued his compre
previously expressed opinion that a Rhætic flora occurs at
Yamanoi. hensive research on the otoliths of fishes, which is finely
Part üi. of vol. xxxii. of the Records of the Geological illustrated with photographic plates. In the Verhandlungen
Survey of India is mainly concerned with palæontologs. of the same body (1906, p. 124) he summarises his results, which are shown to have a bearing on the geographical
Prof. Diener, of Vienna, describes the permo-Carboniferous
fauna of the Subansiri valley in Assam, adopting conditions of Miocene and Pliocene times in Europe. For
know of the instance, in accordance with what we
Waagen's term Anthracolithic for beds of the two Congeria-beds, the otoliths in these strata are found to
systems considered jointly. Mr. G. E. Pilgrim reviews the
distribution of Elephas antiquus, which he regards 38 belong to the Sciænidæ, a family haunting especially the
having originated in the Pliocene of Europe, reaching mouths of large rivers, and even penetrating into fresh
India somewhat later in geological time, as glacial con water. Franz Toula (Jahrbuch der Reichsanstalt, 1905, p. 51) (p. 218), did it leave any direct descendants. The paper
ditions set in across Europe. In neither area, however also throws new light on the Congeria-beds of Vienna by describing Pelamyeybium, a new genus of fish, which has
is accompanied by five handsome plates. Prof. Diener, in been discovered in them. He discusses a wide range of
a second paper, points out that a bed of Triassic limestone literature on allied forins of tunny. In the current volume
in Byans, 3. feet thick, represents the Noric and Carnio
faunas, the forms from distinct horizons becoming mixed in for 1906, p. 1, O. Abel investigates the fishes with greatly
so small a thickness of sediment. developed fins that have been recorded from various formations, and states that the Triassic genera Thoracopterus, Bronn., Gigantopterus, and Dollopterus are the
UNIVERSITY AND EDUCATIONAL only ones that can be referred with certainty to the flying
INTELLIGENCE. fish. The two last-named genera are to science. All these fossil forms are constructed outwardly on the Prof. Wilhelm Wien, prosessor of physics in the l'nitype of the modern Exocætus. The species of Chirothrix versity of Berlin, has been invited to occupy the physies with large fins, and other members of Smith Wood- chair in the University of Berlin, in succession to the late ward's Chirothricidæ, believed by Abel to have Prof. Drude. been incapable of light. It is hard, moreover, to have
Science states that by the will of the late Mr. T. that a species known as Engraulis evolans
Kearney, of Freno, his entire estate, amounting to about is similarly rejected. Zoologists will be interested in the
200,000l., is bequeathed to the department of agriculture general discussion of the flight of fishes and its origin
of the University of California. (pp. 55-84), and the comparison between true flying-fish and others with expanded pectoral or ventral fins. The The authorities of the Leland Stanford University, which author, to avoid misconception, would prefer to speak of suffered severely through the San Francisco earthquak".
parachute-fish ” rather than of “flying-fish." There is are reported to have decided to sell the jewels of Mrs no indication that any fossil example used its pectoral fins Leland Stanford, bequeathed to them by their late owner, more effectively for flight than is the case in modern for the purpose of restoring the University library; the times. The memoir is fully illustrated ; and the realisation value of the jewels is estimated at a million dollars. of flying-fish gleaming in the Triassic sunlight adds a new
BIRKBECK COLLEGE will
its eighty-fourth fascination to the ancient European sea.
session on Wednesday, September 20, when Sir Edward H. G. Stache (l'erhandlungen, ibid., 1905, p. 292) directs
Busk, Vice-Chancellor of the University of London, will the attention of zoologists as well as palæontologists to
give the opening address. The college has added considerhis Sontiochelys, a new chelonian from the Cretaceous of
ably to its appliances in recent years, and the physical, Görz, the affinities of which are with living forms in
chemical, biological, and metallurgical laboratories are 21) Australia and Brazil, rather than with fossil Jurassic forms
equipped. Courses in mining, metallurgy, and assutin.com in Europe.
are given both in the day and evening. 0. Abel (Jahrbuch, ibid., 1905, p. 375) has described a cetacean, Palaeophocaena andrussovi, from the Middle Tue council of University College, Bristol, has offered Miocene of the Taman peninsula in the Black Sea. This the chair of chemistry, just vacated by Dr. Travels carly form has led him to examine the living Phocæna of F.R.S., to Dr. Francis Francis. Dr. Francis stud ed
Cniversity College, Liverpool (now the University), and at are open, without fee, to all teachers in London schools. Erlangen, and has been assistant professor at University Teachers wishing to attend should apply for forms to the College, Bristol, since 1903. He has published many papers Executive Officer, London County Council Education in journals of chemical societies, both in England and Offices, Victoria Embankment, W.C. Forms must be reGermany, among his most recent papers being one turned not later than Saturday, September 22. benzoyl nitrate, which describes a new method for the
SPEAKING at Hawarden on Monday on the objects and nitration of organic compounds.
advantages of education, Mr. Wyndham remarked that Iue annual report of the South Australian School of “it was right to include science in the curriculum because Mines and Industries for 1905 shows that excellent progress we are now living in an age of science. In the sixteenth in technical education is being inade at Adelaide. The century people lived in an age of literature, and the minds number of students enrolled was 1507, and the number of
were attracted toward the old books written in subjects taught was forty-five, courses having been started Greek and Latin." This difference between the needs of during the year in agriculture, building drawing, dairy the two ages was pointed out by Sir Norman Lockyer in work, motor management, veterinary science, and flower address at the Borough Polytechnic Institute last culture. The report contains a detailed account of the December, printed in NATURE of March 29 (vol. lxxiii., laying of the foundation-stone of the new metallurgical P: 521), as the following extract from the address clearly building on October 3, 1905.
shows :-“ We must arrange our education in some way
in relation to the crying needs of the time. The least From among recently made foreign appointments we
little dip into the history of the old universities will prick note the following :-Dr. Emil Bose, lecturer in physics the bubble of classical education as it is presented to us of Göttingen University, to be professor of physical today. Latin was not learned because it had the most chemistry in the Danzig Technical High School; Dr. magnificent grammar of known languages. Greek was not Alfred Kalähne, of Heidelberg University, to the physics learned in consequence of the transcendental sublimity of chair of the same institution ; Dr. Taddäus Godlewski to
ancient Greek civilisation. Both these things were learned be extraordinary professor of general and technical physics because people had to learn them to get their daily bread, in the Technical High School, Lemberg ; Dr. K. Fries to
either as theologians or doctors or lawyers, and while they to a departmental director of the chemical institute of
learned them the nature of things was not forgotten. Marburg University in succession to Prof. R. Schenck,
Now what is the problem of to-day? We are in a world who has received an appointment in Aachen; Dr. Franz
which has been entirely changed by the advent of modern Waterstradt, scientific assistant to the German Agricultural
science, modern nations, and modern industries, and it is ociety, to be extraordinary professor in the University of
therefore perfectly obvious that if we wish to do the best Breslau; the lecture courses on inorganic and analytical
for our education it must be in some relation to those three Themistry of the Faculté des Sciences of Paris University,
great changes which have come on the world since the old which Prof. Ribau is giving up on his retirement from active
days.' 3cademic life, have been deputed to MM. Paul Lebeau and li, Urbain, while M. L. Ouvrard has been appointed director des laboratoire d'enseignement et de recherches chimiques of the same faculty.
SOCIETIES AND ACADEMIES. The new laboratory of physical and electrochemistry
LONDON. which has been presented to the University of Liverpool Royal Society, May 31.—“On the Main Source of by Mr. E. K. Muspratt will be formally opened on Precipitable’ Substance and on the Role of the HomoSaturday, October 13, by Sir William Ramsay, K.C.B., logous Proteid in Precipitin Reactions." By Prof. D. A.. F.R.S. Besides many eminent English chemists, the Welsh and Dr. H. G. Chapman. Communicated by Dr. following distinguished foreign of science have C. J. Martin, F.R.S. accepted invitations
be present :-Profs. Ostwald Conclusions.—1) The homologous proteid is not wholly (Leipzig). Abegg (Breslau), Cohen (Utrecht), Goldschmidt removed from the superfluid of a precipitin interaction, Christiania); also Prof. Lash Miller (Toronto). Addresses whether it is more than sufficient or less than sufficient to will be delivered by Sir William Ramsay and Prof. neutralise all the precipitin present. Ostwald. The distinguished guests will be entertained to (2) Conclusive evidence that the homologous proteid is dinner by the University Association on October 12, and sensibly diminished in similar circumstances has not been by the Liverpool section of the Society of Chemical Industry obtained. on October 13. The new laboratory contains twenty-one (3) The substance that is thrown out of solution is derived pooms, and has been specially built and fitted for work in mainly from the anti-serum. physical and electrochemistry. Its electrical equipment in- (4) The character of an anti-serum depends upon two cludes an 80-kilowatt motor alternator, a 30-kilowatt motor factors which are mutually independent, (a) the precipitable generator for direct current, a 10-kilowatt charging set content, (b) its precipitability. Call by Messrs. Siemens Bros.), and a 36-cell Tudor (5) The precipitable content is indicated by the maximum accumulator battery. The name of the new laboratory is precipitum obtainable from a given amount of the antito be “ The Muspratt Laboratory of Physical and Electrochemistry.”
(6) Its precipitability is indicated by the minimum
of homologous proteid that completely On Wednesday, October 3, Sir William Ramsay, K.C.B., will give a public lecture at University College, London,
neutralise the precipitin in a given amount of the anti"The Chemical Nature of Electricity, and October 4 Prof. L. W. Lyde will give an introductory
(7) The solid content of precipitin anti-sera is increased lecture on " Geography as 'Corollating' Subject in
relatively to that of natural sera. School Work. These two lectures are open to the public June 28.-.“ On the ‘Kew' Scale of Temperature and without payment or ticket. Among the courses of free its Relation to the International Hydrogen Scale.” By lectures shortly to be commenced at the college are the
Dr. J. A. Harker. following :--Six lectures, open to the public without pay- In 1887 the International Committee of Weights and menit or ticket, on the “ History of Statistics and the Measures adopted as the standard thermometric scale the Sature and Aims of Modern Statistical Methods,” by Mr. constant-volume hydrogen thermometer.
By far the G. L'. Yule, on Wednesdays at 5.30, commencing Wednes- majority of temperature measurements are made by means dav, October 10; ten lectures on ** Recent Development in of mercury thermometers. The ideal mercury thermometer the Teaching of Arithmetic and Elementary Mathematics, would be one which, when subjected to any steady temperaby Mr. F. L. Grant, on Saturday mornings at 10 a.m., ture, would assume immediately a steady reading identical beginning on Saturday, October 13 ; ten lectures on “ The with that given by the hydrogen thermometer at the same Hygienic Needs of the Scholar," by Prof. Henry Kenwood, temperature. This ideal is, as might be expected, not on Thursday evenings at 7.30 p.m., beginning on Thurs- attained by any known mercury-in-glass thermometer, and day, October 11. This course and that on mathematics the amount of the departure from the ideal at different
temperatures depends on the particular kind of glass figures for French Verre Dur”! and for Jena employed.
are added in parallel columns, it being unde sFor many years thermometers have been verified at Kew stood that each glass is treated in the manner presa ribed Observatory in large numbers annually, their indications for it, the Kew glass being a
fixed zero" scale and the being referred to the Kew Scale of temperature. It has other two " movable zero. recently become a matter of interest to determine to what degree of accuracy the Kew Scale may be considered as
Paris. identical with that of the hydrogen thermometer, and this memoir gives an account of some experiments undertaken
Academy of Sciences, September 10.-M. A. Chauveau at the National Physical Laboratory with a view to
in the chair.-Variations in the gravitation constant in the elucidate this question.
Simplon Tunnel : Marcel Brillouin. A resume of the The usual type of Kew standard thermometer is an instru
various corrections required by the crude readings of the ment having a range from below 32° to above 212° F., and
instrument used. The complete work will be published in is usually divided only to 1° F.
the Recueil des Savants étrangers.--The experiments et For the purpose of this research it was thought desirable,
M. Villard and his theory of the aurora borealis : Car after studying the behaviour of a number of these old
Störmer. In his memoir published in 1904 on the motiva thermometers, to construct new standards, having a more
of a material point carrying a charge of electricity, and open scale and capable of being read to higher accuracy,
continued in two recent notes in the Comptes rendus, the and to treat these from the beginning in a definite and
author has developed a theory which not only explains the systematic manner.
phenomena experimentally observed by M. Villard, but als) The readings of a Kew standard are always understood predicts others not yet observed, and renders doubtlul to apply to the thermometer in a vertical position when
certain of M. Villard's conclusions regarding the auriu immersed in water up to the reading, and the instruments
borealis. The experiment of M. Villard, in which the are always intended to be used as fixed rather than as
magnetic field is due to two equal and opposite magnetic “ movable zero instruments. That is, the normal pro
poles, is considered in detail in the present note, and the cedure to measure any temperature on the Kew scale would
trajectories worked out for several cases, diagrams brire be first to determine the zero and afterwards the tempera- given. The author draws the conclusion that Birkeland's ture in question, applying to the latter a constant correc
theory is not shaken by M. Villard's paper.-The atomi tion for any deviation of the zero point from its nominal weight of silver : P. A. Guye and G. Ter-Gazarain. correct value, o° C. or 32° F., and ignoring all subsequent
Reasons are given for showing that the atomic weight al zero changes.
silver should be lowered from 107.93 to 107.89.-A case The main conclusions of the work are :
formation of anthocyanine under the influence of the punc(1) The departure of the natural scale of the “ Kew" ture of an insect (Eurrhipara urticata) : Marcel Mirande. mercury-in-glass thermometer from the international hydrogen scale is very small at all temperatures. (2) For measurement of temperature differences over
PAGE ordinary ranges, such as in calorimetry, the results obtained directly or indirectly from a Kew standard may be con- A Text-Book of Optics .
50 sidered as hydrogen temperatures without application of Researches in Japanese Waters. By L. A. B. 510 any correction.
Bird Books for Beginners
511 (3) In some instances when defining the temperature at which certain standards have their definite value, such as,
A Guide to British Diptera. By E. E. A. for example, the temperature 62° F. for the British standard
Our Book Shelf :yard, the temperature scale to which the measurement re- Price : “ Illogical Geology. The Weakest Point in ferred was not definitely specified. This research renders the Evolution Theory."--G. A. J. C.
51; it probable that if the instrument were a good English Robinson : “ The Religion of Nature"
$I; glass thermometer approximating to a Kew standard, the Gherardi : “ Carboni fossili inglesi’ error made in considering its indications as identical with Fox: “How to Find and Name Wild Flowers 514 the hydrogen scale would be within the limits of accuracy Letters to the Editor:of length measurements. (4) For the ordinary ranges of meteorological and clinical
American Chemists and the Jubilee of the Coal-tar
Colour Industry.-Prof. R. Meldola, F.R.S. 314 thermometers reading to o°:1 F., many thousands of which have been verified at Kew annually for many years past,
Horizontal Pendulums and Earthquake Echoes. --Dr.
C. Coleridge Farr ; Prof. John Milne, F.R.S. 315 the temperatures as given on the Kew certificate may be
Remarkable Rainbow Phenomena.-M. Spence considered as hydrogen temperatures.
The Mixed Transformation of Lagrange's Equations, (5) The table appended gives the mean departure from
Dr. E. J. Routh, F.R.S. the hydrogen scale of the Kew” scale of temperature as
The Recent Controversy on Radium. By F. Soddy 510
Our Astronomical Column :
Jupiter's Sixth Satellite
Observations of Solar Phenomena, 1906
The Physical Geography of Volcanoes. (Illustrated'.) +0'103
+0'083 The Ascent of Ruwenzori +0'050
+0'058 The Toronto Meeting of the British Medical 90 -0.025 +0'026 +0'030 Association. By Prof. R. T. Hewlett . .
329 +0 000
A Larch Sawfly in Cumberland. By F. V, T.
520 observed in this investigation, the figures being rounded to
University and Educational Intelligence the most probable oo.005 C. For comparison purposes the Societies and Academies . .
1 16", - THyd.
We invite you to call at our Stand No. 209 at
THE ENGINEERING AND
OLYMPIA, LONDON, W.,
Open 10 a.m. to 10 p.m.
STANDARD CADMIUM CELLS.
These Cells are made almost exactly to the specification proposed by the National Physical Laboratory and incorporated in the 1905 Report of the British Association Committee on “Experiments for Improving the Construction of Practical Standards for Electrical Measurements.”
Price of Single Cell, H. form, in brass case...
£1 17 6 With N.P.L. Certificate
£2 7 6 Double Cell, H. form, in brass case
£2 17 6 With N.P.L. Certificate
£3 12 6 Low Resistance Cell, in brass case ..
£2 7 6 With N.P.L. Certificate
£2 17 6 Mercury Thermometer divided to 0.5 of a degree and
£0 reading from 0° -30° C., for use with above cells ... ) With N.P.L. Certificate
£0 10 6
) ס 3
Write for Descriptive Pamphlet toTHE CAMBRIDGE SCIENTIFIC INSTRUMENT COMPANY, LTD., ,
TECHNICAL" SERIES of PHYSICAL APPARATUS.
MARCONI'S WIRELESS TELEGRAPH CO.,
covering all the important
experiments in LIGHT. IT See NATURE, Aug. 2, page 338.
10", 12" & 14" INDUCTION COILS. PORTABLE HOSPITAL SETS,
SWITCHBOARDS, &c., &c.
Send for Ild. Descriptive Pamphlet (including instructions for working) post free from the Sole Agents for U.K. and
19 & 21 SUN STREET, FINSBURY SQUARE, LONDON, E.C. THE TECHNICAL COLLEGE SET. Leather covered Pocket Case, with name plate and snap fastening, velvet lined and fitted with W. H. Harling's Electrum instruments.
CONTENTS, 4-inch Bow Pencil Compass, with knee joints and and
bolt needle point, ink point and length: ening bar; 5-inch Improved Pat. tern Hair Divi. der ; Ink Spring Bow; Pencil
Spring Bow ;
Box of Compass
Leads and spare
Needles. W. H. HARLING, Mathematiscalu m Dura wing and surveying
Manufacturer, 47 FINSBURY PAVEMENT, LONDON, E.C.; AND AT CROSVENOR WORKS, HACKNEY Established 1851. DE Illustrated Catalogue (covering all kinds)
Write for Illustrated Price List “H”to the Works :
TYSSEN ST., DALSTON, LONDON, N.E.