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-pieres when in contact. When the charges on the spheres | by heating, it is gradually re-absorbed to its origira. sire to and -9 respectively, and xla is small compared amount from the atmosphere.-Phenakite from Braz | with unity, the attractive force between them is given by Dr. G. F. Herbert Smith. Crystals of phenakite recenti

discovered at the gold mine, San Miguel de Piracicaba 24

Brazil, all display the new form 2,52; noted by oshapproximately. axlog. (014)

observers, and another, 11599, lying near it. The tetarto

hedral character of the symmetry is clearly marked. -- The effect of previous magnetic history on magnetisa-F. N. A. Fleischmann.

| Preliminary note on the occurrence of gyrolite in Ireland

The mineral gyrolite, thoug tion : E. Wilson, G. E. O'Dell, and H. W. K. Jennings. It is well known that if a piece of iron be subjected to

well known as occurring in the basalts of the

islands of Scotland, has not hitherto been recorded 1:0. a considerable magnetising force, and then be tested for permeability corresponding to a lower force, the permea

Ireland. Specimens have now been found in the basa.

and dolerites in the neighbourhood of Belfast. Th bility so obtained may differ widely from the permeability which would have been obtained had the material been

mineral occurs in small spherical aggregates, forining previously demagnetised. The principal object of this

crust on faroelite; it is associated with apophyllite, 3 paper is to examine the effect of previous history upon

occasionally with chabazite. The chemical composition the dissipation of energy by magnetic hysteresis. A ring

and the optical characters of the mineral agree with this of iron was carefully demagnetised, and the hysteresis

of gyrolite. The mineral is found only in the harder and

denser lavers of the basalt, and never in the soft, highly loop No. 1, corresponding to a force II, was obtained. The force was then increased to a value H, for the pur

amygdaloidal layers. pose of producing previous history, and removed. A

Zoological Society, June 15.--Dr. A. Smith Woodware. hysteresis joop No. 2, corresponding to the force H, was F.R.S., vice-president, in the chair.--The organ

c then obtained. As is well known, this loop shows a

Jacobson in Orycteropus : Dr. R. Broom. Orycterofus reduced permeability. The ring was carefully demag- has a long narrow organ of Jacobson which opens irin netised, and a hysteresis loop No. 3 obtained as follows. the naso-palatine canal." The arrangement of the cartilag A magnetising force supplied by an additional coil was is quite different from the type found in the hig! gradually increased, until on reversal of the original force

Eutheria, and there is also a marked difference from th. H a change of magnetic induction exactly equal to that

arrangement in Dasypus. The general structure observed in the case of loop No. 2 was obtained. Two

nearest to that of the marsupials, though there loops (Nos. 2 and 3) have now been obtained, each having number of striking differences.-Some points in the struthe same change of magnetic induction and the same net ture of the lesser anteater (Tamandua tetradactvia). win change of force H. The change from loop No. i to loop

a note on the cerebral arteries of Myrmecophaga : F. E. No. 2 has been brought about by inter-molecular force,

Beddard.—Decapod Crustacea from Christmas Islars, whereas the change from loop No. 1 to loop No. 3 has

collected by Dr. C. W. Andrews : Dr. W. T. Calman.been brought about by the application of an externally An abnormal individual of the echinoid Amblypneustre applied constant force. If the effect of inter-molecular

II. L. Hawkins.—The decapods of the genus Gennadan force were capable of being exactly equivalent to that of collected by H.M.S. Challenger : S. Kemp.-Notes on the externally applied constant force, one would expect young walrus (Odobaenus rosmarus) recently living in th, to find that the energy required to perform a complete cycle would be the same in each case-that is, the area

society's gardens : Dr. P. C. Mitchell.-Notes

viscera of a walrus (Odobaenus rosmarus): R. H. Burne. of loop No. 2 would be equal to the area of loop No. 3. The experiments show that within certain limits the

Royal Meteorological Soriety, June 16. - No I! area of loop No. 2 is greater than that of loop No. 3, the difference depending upon

Mellish, president, in the chair.-Interdiurnal variabiliy

the magnitude of the reversed force II and the previous history.

os temperature in Antarctic and sub-Antarctic regions R. C. Mossman. The author discussed the day-to-dar

difference in the mean temperature of successive days a: Mineralogical Society, June 15. – Principal 11. A. Miers, a few places in the Antarctic regions for which the F.R.S., president, in the chair.-Carnotite and necessary detailed daily observations are available.

T associated mineral-complex from South Australia: T. greatest mean annual temperature variability: viz. 54. Crook and G. S. Blake. The caruotite of Radium Hill, was recorded during the “ drift " of the Belgica in the near Olary, South Australia, occurs in a definitely crystal- ice pack, this high value being closely followed by a mear line condition. The crystals are tabular and orthorhombic of 5:3° at the South Orkneys. In the Victoria Lani in symmetry. The carnotite of Colorado, though not so region, Ross Island and Cape Adare have a somewhat definitely crystalline, also contains tabular crystals which lower temperature variability of 4:50, the values of the are orthorhombic in symmetry, and probably identical in southern station being higher in summer and autumn ard mineral characters with those of South Australia. From lower in winter and spring than at the northern statior. the general characters of these crystals it appears that South Georgia occupies an intermediate position betwer carnotite is a mineral belonging to the uranite group, and a continental and an occanic climate in its curve of that it may be regarded as the vanadium analogue of variability, the mean monthly values varying according *. autunitc. The black lodestuff in which the Radium Hill the proximity of the pack ice. At this station the seasonal carnutite

is heterogeneous in constitution. It values show a small variation, and this is also the can consists essentially of ilmenite, which is impregnated with at Ushuaia, in Tierra del Fuego. The variability at the magnetite, rutile, carnotite, and a mineral which is possibly Falkland Islands and New Year's Island is very smali, tschefskinite. The evidence provided by a study of the pointing to the conserving influence exerted by the insula. complex does not necessitate the view that new minerals conditions which prevail at these places. The maximum are present, such as that to which the name “ davidite” | variability occurs in winter, and the minimum in summer, has been given.-The species pilolite, and the analysis of at the three Antarctic stations, as well as at South Georgia a specimen from China : G. S. Whitby. The specimen and the South Orkners. The smallest variability at any examined is from a new source, and possesses the formula season for any station occurs at the South Orkneys in A1,0,.2SiO2,20 Mg0.2S;0.).711,0, formula which is summer, being only 1.40. It is at this season that cloud simpler than those given by Heddle and by Friedel to the amount and fog frequency are at a maximum, while, at the pilolites which they investigated. The author considered same time, rapidly moving cyclonic disturbances are of inthat, for the present, the term pilolite should be applied to frequent occurrence.--Temperature records during balloon those varieties of mountain leather and mountain cork ascents : E. Gold and Dr. W. Schmidt. The authors which (1) cannot be referred to asbestos, on account of described experiments made with the view of ascertaining their large water-content; (2) cannot be identified with if appreciable errors could enter into the temperatures serpentinous asbestos, on account of the relatively small recorded balloon ascents owing to errors in the alcohol. amount of magnesia which they contain ; and (3) hold carbonic acid method of testing the apparatus.-Thr their water in such a way that, when it has been expelled i exposure of thermometers : L. C. W. Bonacina.







Daniel comet: M. Javelle. Observations of this comes Royal Society. June 9.-- I'r. Ciuo Broun, vice-presi. were made at Nice on June 16, 17, 18, and 19. The comet dent, in the chair. --The anato:ny of the Weddell scal:

was nearly circular, with a diameter of 1.5'. There was Prof. D. Hepburn. Dr. W. S. Bruce, leader of the

a faint nucleus of magnitude 11 to 12.- Observations at Scottish National Antarctic Expedition, had been fortu- the Observatory of Marseilles of the

1909a nate to catch a young male seal only two or three days (Borrelly): Henry Bourget. Nucleus scarcely perceptible, old, and it was this young specimen of the Weddell scal

of about 10.5 magnitude. Observations of the comet 1909a the anatomy of which was described in detail. Attention (Borrelly-Daniel) made at the Observatory of Besançon was particularly directed to the abdominal cavity, and with the bent equatorial : P. Chofardet. Observations especially to the peritoneal arrangements and the organs made on June 17 and 19. Diameter, 1.5'; nucleus, very of alimentation. The length of the animal was 51.5 inches, faint; magnitude, i to 12.-A question of minimum : S. and the length of the intestine 50 feet.-Lower Palæozoic {anielevici.-The series of Dirichlet : Marcel Riesz.-Ilvolithidæ from Girvan: F. R. Cowper Reid. The Flight and the shape of the wing: L. Thouveny.-An description was based on specimens in Mrs. Gray's collec, experimental method for aërodynamical researches : A. tion. Nearly all the species were new; ten well-defined Rateau. The surfaces or models to be studied are placed pecies of Hyolithes were established, also three of its

in a very homogeneous air current moving with a definite subgenus Orthotheca. Two other forms were referred to velocity.' The results of experiments on a thin rectangular Ceratotheca, and five new species of Pterotheca were

plane are shown graphically, and it is shown that there recognised. The affinities of these new species were found no possible angle of inclination of the plane between to be rather with the Scandinavian than with English 29° and 36o. This discontinuity was quite unexpected. — members of the group. The rich development of the The heat of polonium : William Duane. The sensitive Ilvolithide in the Girvan district as compared with other differential calorimeter used in these experiments has been British areas was noticed, and a marked feature of their described in an earlier paper ; 0.2 gram of polonium salt stratigraphical distribution was the abundance of species gave off 0.0117 calorie per hour. Polonium and radium in the Blaclatchie beds.-The atomic weight of platinum : in quantities which give the same ionisation currents give Prof. E. H. Archibald. The experimental feature of the

off practically the same quantities of heat. This fact is paper was the extreme care taken to ensure absolute purity favourable to the hypothesis that the heat given off by of the platinum salts of chloro- and bromo-platinic acids these bodies is due to the kinetic energy of the a rays.used in the determination. Assuming the values given by The ionisation of air by high-tension electric mains : L. the International Committee for the atomic weights con- Houllevigue. The observed case of a hailstorm followcerned in the calculation, the author found the atomic

ing exactly the direction of a high-tension cable has been weight of platinum to be not far from 195.25.--Group-explained by the suggestion that the wire emits torrents velocity and the propagation of waves in a dispersive of ions carrying large electric charges. Direct experiment medium : G. Greon. The aim of the paper was to develop fails to confirm this hypothesis. The number of ions, posithe idea of group-velocity contained in Kelvin's paper tive and negative, existing in the neighbourhood of a of 1887 on the waves produced by a single impulse in high-tension wire is sensibly nil. Indeed, the high-tension water, &c., and to reinove difficulties raised by Kelvin

lines appear to reduce the number of ions in the immediate in later papers as to the applicability of Osborne Reynolds's neighbourhood rather than increase them.-A new form of and Rayleigh's dynamical interpretation of group-velocity. the characteristic equation of gases : A. Leduc.-A new The idea of group-velocity used was essentially the same application of the superposition, without confusion, of small as the principle of “ stationary phase ” used by Lamb in electrical oscillations in the same circuit : E. Mercadier. his investigation of ship waves, but applied in this paper The original experiments were carried out with a complete to the Fourier trains which constitute any wave-disturb- metallic circuit; similar experiments have

been The whole investigation was useful in directing successfully carried out between Paris and Lyons, using attention to the manner in which group-velocity was con- a single telegraph wire with earth return.-A galvanometer cerned in the modification of an initially regular group for alternating currents : M. Guinchant. The galvanoof waves, or of any disturbance initially confined to a meter described was designed to replace the telephone in finite portion of a dispersive medium, and in showing. Kohlrausch's method of measuring the resistance of thereby, that the idea of group-velocity contained the ex- electrolytes. The accuracy of the measurements is of the planation of the modus operandi of dispersion.--The

same order as when the telephone is used.— The action of theory of Jacobians in the historical order of development

some organo-magnesium compounds on methyl-2-pentaup to 1860 : Dr. T. Muir.— Nematonurus lecointei, a deep

none-4: F. Bodroux and F. Taboury. The reaction is sea fish first discovered by the Belgica, and found again complex, as employing the reagents in molecular proporbv the Scottish National Antarctic Expedition : Prof. tions there is always a considerable proportion of unaltered Louis Dollo. The one specimen obtained by Dr. W. S. ketone in the reaction product, together with the ethylene Bruce was found in lat. 62° 10' S. and long. 41° 20' W.

hydrocarbon corresponding to the tertiary alcohol which at a depth of 1775 fathoms, and it constitutes the first

should normally have been produced. The tertiary alcohol macrurid found in the Antarctic seas. The correspond- is formed with a yield varying from 40 per cent. to 60 per ing Arctic zone has yielded eight species in six genera. cent. of the theoretical.-Some derivatives of thioindigo : The results were regarded by Prof. Dollo as unfavour- M. Péchamp.--Elateric acid : A. Berg.-Pseudoable to the theory of bipolarity:-An experiment with the morphine: Gabriel Bertrand and V. 1. Meyer. Crvosnark gap of an induction coil: Dr. Dawson Turner. scopic methods indicate that pseudomorphine is derived When the spark gap is just long enough to prevent the from two molecules of morphine with the loss of two rasy passage of the spark, a dielectric rod or plate brought

atoms of hydrogen, and its formula would thus be near the positive electrode facilitates the discharge, but CHV.,0,.-The crystalline schists of the Ural: L. when brought similarly near the negative electrode it has

Duparc.--The elaboration of the nitrogenised material in no obvious influence on the passage of the spark.

the leaves of living plants : G. André.—The influence of Paris.

time on the anti-virulent activity of the secretions of Academy of Scienres, June 21.-M. Bouchard in the vaccinated animals and the relative immunity of the chair.-Dimethylcamphor and dimethylcampholic acid : tissues : L. Camus.—The influence of a prolonged stav A. Haller and Ed. Bauer. Camphor forms a sodium at a very high altitude on the animal temperature and the derivative when treated with sodium amide, from which viscosity of the blood : Raoul Bayeux. The body temperathe monoalkyl and dialkyl derivatives are readily obtained. ture and the viscosity of the blood, under the influence of The mixture of monoalkyl and dialkyl derivatives can be high altitudes. undergo modifications which are proporseparated by taking advantage of the fact that only the tional to the stay at the high altitude.--Hav fever : Pierre mono-derivatives combine with hydroxylamine to form an Ponnier.- The tectonic relations of the earthquake in oxime. Dimethylcamphor, heated with sodium amide, Provence: Paul Lemoine.-A geological sketch of the gives an amide, probably dimethylcampholamide, from regions situated to the east and north-east of Tchad : which the corresponding acid has been obtained.—The G. Garde.--The geology of the Peloponnesus : Ph. strata of the island of Elba : Pierre Termier.-The new Négris.--The position of the localities which appear to





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have been most troubled in the earthquake of June 11, when the moon is nearest to the earth does the pendulum 1909: M. Jullien.—The oxydases of the

of move in such a manner as to suggest that there is such Chaldette (Lozère) : F. Garrigou.

a tide.—The rainfall of South Africa. The possibility of NEW SOUTH WALES.

prediction over the south-west : A. G. Howard. For this Linnean Society, April 28. - Mr. C. Hedley, president, investigation, which extended over five complete years, in the chair.—The geology and petrology of the Canoblas,

thrce stations were selected, so

a triangle N.S.W.: C. A. Süssmilch and Dr. H. 1. Jensen. The

of observations, and at each the rise or fall of the baroCanoblas are a group of extinct volcanoes in the vicinity of

meter in twenty-four hours was noted, together with the Orange, N.S.W. The western tableland here has an eleva

direction of the wind at L'Agulhas. From a consideration tion of about 3000 feet. The surface of the tableland is a of the various conditions, which fell under twenty-sis peneplain, above which rise residuals of a still older plain. heads, and were worked out daily during five complete This peneplain was cut out of a series of folded Devonian

years, it was found possible to construct a table for pre and Silurian rocks, and has since been elevated to its

diction purposes. This was applied to the rainfall for the present altitude (3000 feet). The Canoblas Mountains

year 1908, and the element of error under each condition proper consist of lavas and tuffs, deposited upon the

of barometer was :-(1) when the pressure was decreasing peneplain.-Observations the development of the

generally, 5:23 per cent., and (2) when the pressure was marsupial skull : Prof. R. Broom. A fairly complete increasing generally, about

n per cent., proving the series of the diprotodont Trichosurus vulpecula, and an

argument that it is possible to predict rainfall over the interesting early stage of the polyprotodont Dasyurus

district from the date suggested. viverrinus, have been studied.-Notes on the synonymy and distribution of certain species of Australian Coleoptera,

DIARY OF SOCIETIES. with descriptions of new species of Tenebrionidæ : H. J.

MONDAY, JULY 5. Carter. The paper comprises notes upon the synonymy

Royal GEOGRAPHICAL Society, at 8.30.--Captain Tilho's Explorations is

the Lake Chad Region : Lieut. Mercadier. and distribution of a number of species referable to the

WEDNESDAY, JULY 7. three families Buprestidæ, Tenebrionidæ, and Ceramby

BRITISH ASTRONOMICAL AsSOCIATION, at 5. cidæ, accumulated during a recent visit to Europe, and especially to the museums in Brussels, Paris, London, and


PAGE Oxford, together with the descriptions of twenty-one

The Imperial Gazetteer Atlas of India. By species of Tenebrionidæ proposed as new.

T. H. H.

Essays on Leonardo da Vinci. Asiatic Society of Bengal, May 5.-A Goniwmya, from Para Rubber. By L. C. B. the Cretaceous rocks of southern India: H. C. Das. Altitude Tables for Navigators Gupta.-Coptis : 1. H. Burkill. The author endeavours Our Book Shelf:to determine the source of the roots of Coptis sold in “Guide to the Whales, Porpoises, and Dolphins India. Three kinds are sold, one, as is well known, (Order Cetacea), exhibited in the Deputment of coming from the Mishmi hills, and being derived from

Zoology, British Museum (Natural History), CromCoptis Teeta, Wall, the other two imported over-seas, and well Road, London, S.W." possibly being, respectively, roots of Coptis Teeta, var. Bohn:

La Naissance de l'Intelligence."-W. B. chinensis, Fine and Gagnep, and of Coptis anemonaefolia, Owen: “The Dyeing and Cleaning of Textile Sicb. and Zucc. Plants of Coptis Teeta in cultivation at

Fabrics. A Handbook for the Amateur and the the Lloyd Botanic Garden, Darjeeling, have been studied,

Professional."-Prof. Walter M. Gardner

5 and figures drawn from them.-Morphological and physio- Hildebrandsson and Hellmann: “ Codex of Resological differences between Marsilea left on dry land and lutions adopted at International Meteorological that growing in water : Nibaran Chandra Bhattacharjee.

Meetings, 1872-1907

5 Marsilea quadrifolia does not fruit when growing in Abbey : “ The Balance of Nature, and Modern water, but only on dried earth.-Notes on the history of Condi'ions of Cultivation : A Practical Manual the district of Hughli before the Mohammedan period : of Animal Foes and Friends, for the Country Nundo Lal Dey.—The drug astukhudus, nowadays

Gentleman, the Farmer, the Forester, the Lavandula dentata, and not Lavandula Stoechas: 1. H. Gardener, and the Sportsman."--R. L. .

5 Burkill. It is probable that the importation of Lavendula Lotters to the Editor :dentata into India began with the Portuguese trade. Diurnal Variation of Temperature in the Free Before that, Lavendula Stoechas from Asia Minor served Atmosphere. - E. Gold .

6 the drug astukhudus from the time when the Temperature of the Upper Atmosphere.-F. J. w. Mohammedans introduced it.—The Manikyala tope : H. Whipple

6 Beveridge.-First notes on Cymbopogon Martini, Stapf : The Aeronautical Society. ---Eric Stuart Bruce; 1. H. Burkill. The two varieties, Motia and Sofia, are

Prof. G. H. Bryan, F.R.S.

6 to be distinguished from one another by the absence or The Darwin Celebrations at Cambridge

7 presence of the chemical body carvon, by the angle at A New Analytical Engine. By Prof. c. V. Boys, which the leaves arise, and by different preferences in the

F.R.S. matter of climate.

Prof. D. J. Cunningham, F.R.S.

15 Cape Town.

Dr. G. F. Deacon . Royal Society of South Africa, May 19.-Dr. L. Craw. Notes

16 ford in the chair.—The possible existence at Kimberley

Our Astronomical Column :of oscillations of level having a lunar period : Dr. J. R. Astronomical Occurrences in July

19 Sutton. The outstanding seismic feature of Kimberley Comet 1909a (Borrelly-Daniel) is the diurnal variation of level whereby the crust of the The Shape of the Planet Mercury. earth rises and falls once a day under the influence of Observations of Sun spots, 1908 some solar action as yet uninterpreted. This matter was Observations of Saturn and its Rings discussed in a paper read before the Royal Society of Tables for the Reduction of “Standard Co-ordinates South Africa last July. The present discussion is con- to Right Ascension and Declination cerned more with variations of level depending upon the The Transvaal Observatory, Johannesburg gravitational influence of the moon. The observations do The Comets of 1907 and 1908 not cover a sufficiently extended period to admit of an The Royal Society Conversazione exhaustive analysis, but, so far as they go, they imply Some Papers on Invertebrates perhaps that when the moon is south of the equator its

The Research Defence Society attractive force causes the whole of the enormous pro

Is the Association of Ants with Trees a true tuberant mass of the earth's crust forming South Africa Symbiosis? By F. A. D.

23 to oscillate periodically east and west during the course of University and Educational Intelligence

23 the lunar day. This oscillation tends to mask whatever Societies and Academies

25 true lunar tide there may be in the solid earth. Only | Diary of Societies


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PRINCIPAL CONTENTS. The Construction and Reading of Weather Maps. I. (Illustrated.) By E. Gold, M.A., F.R.Met. Soc. – The Educational Work of Matthew Arnold. By Robert S. Wood.-Motive and Purpose in Experimental Work. By G. F. Daniell, B.Sc.-The Newspaper in the Schoolroom. By A. Barber. --The New Regulations for Secondary Schools.-The Bcard of Education and Modern Languages. — The Army Qualifying Examination. de V. Payen-Payne. – Educational Notes from France. By Jeanne Morin.-- Personal Paragraphs. By Onlooker.- Toe Conference of Headmistresses. — Assistant Teachers in Council. --Technical Education and Secondary Schools. By J. Wilson, M.Sc.-Correspondence : Conditions of Service of Secondary school Teachers. By Fred Charles, B.A. Quantitative Work in Science in Secondary Schools. By H. G. Williams, B.Sc. -Silica Apparatus. (illustrated.) By A. J. Robinson, M.Sc.-The Diffusion of Gases. (Illustrated.) By Ll. T. Jones, B.Sc.- A Method of Setting up a Barometer, (Illustrated.) By A. C. S.-The Determination of the Volume of a Gas. By W. Willings, B.Sc.



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The following are among the Articles which appeared in the Journal

for June :
June 3.-"The Oldest Remains of Man” (Illustrated), by Dr. William Wright; “A

Great Endowment and its Influence," by Prof. John Edgar; “Germany
and the Patents and Designs Act, 1907,"; “Dr. von Neumayer,
For.Mem.R.S.," by Hy. Harries; “T. Mellard Reade," by H. B. W.;
Polar Magnetic Storms," by G. W. W.; “Rock Engravings in South
Africa” (Illustrated); “The International Congress of Applied Chem-
istry”; “Education and Research in Applied Chemistry,” by Prof.
Raphael Meldola, F.R.S. ; “The Campaign against Malaria,” by Prof. Ronald

Ross, C.B., F.R.S.
June 10.-“A Great Naturalist” (Illustrated), by J. S. G.; “An Angler in North

America ” (Illustrated), by G. W. L.; “ The Water Supply of Kent," by
M. B.; “The Winnipeg Meeting of the British Association"; "The
Darwin Centenary Celebration"; "The Astrographic Conference at
Paris"; "The American Philosophical Society"; "The Italian Earth-
quake of December 28, 1908" (With Map); “The Royal Observatory,
Greenwich"; “The Association of Teachers in Technical Institu-

June 17.-—“Spruce's Travels in South America” (Illustrated), by A. W. H.; “An

Antarctic Album” (Illustrated), by J. W. G.; American and Canadian
Waterways"; "The Problem of an Ultra-Neptunian Planet”; “The
Welsh Gorsedd,” by the Rev. W. Griffith ; “Scientific Work of the Inter-
national Congress of Applied Chemistry" (Illustrated); “The Supply of
Secondary Education in England and Elsewhere," by A. J. Pressland ;

“The South-Eastern Union of Scientific Societies.”
June 24.-" Evolution : Old and New," by Prof. R. Meldola, F.R.S.; “ Frost and Ice

Crystals" (Illustrated), by G. F. H. S.; “Water Power in the United
States" (Illustrated); “Scientific Research in the Sudan” (Illustrated), by
J. W. W. S.; “ The Darwin Commemoration at Cambridge”; “The
New Institute of Physiology at University College, London" (Illustrated);
"The Investigation of Gaseous Explosions” (with Diagrams), by Prof. E. G.

Coker; “'Chemical' Embryos,” by A. D.; “Spectroscopic Researches."
Copies of either of the numbers can be sent post free by the publishers to residents in the British
Isles for 6d. per copy, or to residents abroad for 7 d. ; the June Part (containing all the

numbers) can be sent to any address in the British Isles for 26, or abroad for 2/8.





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