456 
NATURE 
[Marcu 7, 1907 
greatly on the nature of the coagulant employed, there 
being a distinct relation between the fineness of the 
reticular structure of the clot and the elastic properties.— 
The presence of phenylethyl alcohol in the essence from 
the needles of the Aleppo pine of Algeria: Emilien 
Grimal. Details are given of the method of extraction 
and identification of the phenylethyl alcohol.—The suc- 
cessive distributions of terpenic compounds in various 
organs of the living plant: Eug. Charabot and G. 
Laloue.—Fluorine in the shells of molluscs: P. Carles. 
The presence of fluorine in the molluse shells is proved : 
if the shell is treated with hydrochloric acid, the presence 
of fluorine may be easily overlooked, since hydrofluoric 
acid is carried away with the carbon dioxide.—A new 
genus of Pennatulidew: Ch. Gravier.—Giardia alata, a 
new species: J. Kumstlier and Ch. Gineste.—Some 
physico-biological conditions of Lake Mélah, Algeria: J. 
Bounhic!l.—The toxic effects of oysters: J. Baylac. 
Apart from the possibility of bacterial infection, the fluid 
of the oyster itself possesses toxic effects, and these are 
greatly increased by keeping at a temperature of about 
16° C. for two or three days. The author is of opinion 
that many accidents attributed to the bacterial contamin- 
ation of oysters are really due to the increase in the toxic 
power of the natural fluids of the oyster under the influence 
of temperature.—Do elephants possess a pleural cavity? 
Mme. Marie Phisalix. A reply to a recent note of M. 
Giard.—New researches on the transplantation of nerve 
ganglia; transplantation in the frog: G. Marinesce and 
J. Minea. In cold-blooded animals, the transplanted 
ganglion cells live for a much longer time after trans- 
plantation, and react and repair their lesions more readily 
than the ganglion cells of animals at constant tempera- 
ture.—The distribution of microbial secretions, in a 
culture, between the liquid of this culture and the micro- 
organisms. Free toxins and adherent toxins: Extra- 
cellular bodies and intra-cellular bodies: MM. Charrin 
and Goupil.—A remarkable case of an aneurism of the 
ophthalmic artery cured by gelatin: MM. Lancereaux 
and Paulesce. In the treatment of aneurisms of the 
aorta by gelatin iniection the improvement, although 
marked, proves to be only temporary, and the effect of 
each injection is less than that of the one preceding, no 
permanent effect being produced. In the case described 
the cure was complete and permanent after thirty-nine 
injections. 
DIARY OF SOCIETIES. 
THURSDAY, Marcu 7. 
Roya Sociery, at 4.30.—Experiments with Vacuum Gold-Leaf Electro- 
scopes on the Mechanical Temperature Effects in Rarefied Gases: Dr. 
J. T. Bottomley, F.R.S., and F, A. King.—On the Resistance of Air: 
A. Mallock, F.R.S.—Electric Furnace Reactions under High Gaseous 
Pressures : R. S. Hutton and J. E. Petavel.—On the Absorption of Water 
by Cotton and Wool: Dr. M. W. Travers, F.R.S. 
CHEMICAL SOCIETY, at 8.30.—The Constitution of Chaulmoogric and 
Hydnocarpic Acids: M. Barrowcliff and F. R, Power.—Volume 
Changes which accompany Transformations in the System NaoSeQOz, 
5Hs0: H. M. Dawson and C. G. Jackson. 
AERONAUTICAL SOCIETY, at 8.—Wings w. Screws: Colonel J. D. Fullerton, 
R.E.—The Free Lever in the Flying Machine: Herr Karl Milla.— 
Theory of Sailing Flight : José Weiss. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.——The Transmission 
of Electrical Energy by Direct Current on the Series System: Jf. S. 
Highfield. 
LINNEAN Society, at 8.—On the Development of the Frog: Miss N. F. 
Layard.—Biscayan Plankton, Decapoda: S. B. Kemp.—A Special Point 
in the Colour Adjustment of Chamzleon: Prof. E. B Poulton, F.R.S.— 
New Channel Island Plants : G Claridge Druce.—Exrhibitions : Speci- 
mens of Witella ornithopoda, A.Br.: H.and J. Groves.—(1) Probate of 
the Will of Richard Anthony Salisbury; (2) Manuscripts of Dr. W. J. 
Burchell: Prof. E. B. Poulton, F. 
Civit anp MECHANICAL ENeimeane: Sonar at 8.—lT'ypes of Enclosed 
Steam Water Heaters: C. R. Allensby. 
FRIDAY, Marcu 8. 
Rovav INSTITUTION, at 9.—Certain Seasonal Diseases of the Sheep, and 
the Means of Preventing Them: Prof. D. J. Hamilton. 
PuysicaL Society, at 5.—The Rate of Recovery of Residual Charge in 
Electric Condensers: Prof. Vrouton and Mr. Russ.—Experimentral 
Mathematics: Mr. Pichon.—An Instrument to describe Families of 
Equiangular Spirals: Mr. Blakesley.—A Micromanometer ; Mr. Roberts. 
INSTITUTION OF CiviL ENGINEERS, at 8.—Corrugations on Tram-Rails: 
A, T. Arnall. 
MALACOLOGICAL SocrETy, at 8.—On the Non-Marine Mollusca-of the 
Mylne Collection; A.S. Kennard and B. B. Woodward.—Nores on 
Holocene Mollusca from Ightham: A. S. Kennard and B. B. Wood- 
ward.— Descriptions ‘of Four New Species of Melania from New Ireland 
and Ke-lan-tan: H. B. Preston.—On the Arms of the Belemnite: G. C 
Crick. 
NO. 1949 VOL. 75 | 
RoyaL ASTRONOMICAL SOCIETY, at 5.—Computation of Secular Pertuba- 
tions: R. T. A. Imnes.—Observations of Occultations: Rev. A. L. 
Williams.—Baxendell’s Observations of U Geminorum: Edited by H. H. 
Turner.—On the Classification of Long-period Variable Stars, and a 
Possible Physical Interpretation: H. H. Turner.—Perturbations of 
Halley's Comet: P. H. Cowell and A. C. D. Crommelin. 
SATURDAY, Makcu go. 
Roya INSTITUTION, at 3.—Réntgen, Kathode, and Positive Rays: 
J. J. Thomson, F.R.S. 
MONDAY, Marcu tx. 
RovaL GEOGRAPHICAL SOcIETY, at 8.39,—Journeys in Turkey-in-Asia: 
Mark Sykes. 
Prof, 
TUESDAY, Marcu 12. 
Roya InsTiTuTION, at 3.—The Visual Apparatus of Man and Animals: 
Prof. William Stirling. 
INSTITUTION OF Civit ENGINEERS, at 8.—The Construction of Overkead 
Electric Transmission-lines: A. P. Trotter. 
WEDNESDAY, Marcu 13. 
Society oF Arts, at 8.—Medizval Stained Glass, 
Decay: Noel Heaton. 
GEOLOGICAL SociEty, at 8.—A Silurian Inlicr in the Eastern Mendips: 
Prof. Sidney H. Reynolds. —On Changes of Physical Constants which 
take place in certain Minerals and Igneous Rocks, on the Passage from 
the Crystalline to the Glassy State; with a short Note on Eutectic 
Mixtures: J. A. Douglas. 
THURSDAY, March 14. 
RoyaL Society, at 4.30.—Probable Papers:—On the Gravitational 
Stability of the Earth: Prof. A. E. H. Love, F.R.S.—The Total Ionis- 
ation of Various Gases by the a Rays of Uranium: T. H. Laby.—On the 
Ioni-ation of Various Gases by the a, 8 and y Rays: R. D. Kleeman. 
Roya Institution, at 3.—Biolcgy and Progress: Dr. C. W. Saleeby. 
Soclety of ARTS, at 4.30. athe City of Madras: Sir James Thomson. 
MATHEMATICAL SOCIETY, at 5.30.—Exhibition of a New Calculating 
Machine: G. W. Evans-Cross.— On the Reduction of the Factorisation 
of Binary Septans and Octans to the Solution of Indeterminate Equa- 
tions of the Second Degree: Dr. T. Stuart.—Invariants of the General 
Quadratic Form AZodulo 2: Prof. L. E. Dickson. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.—Adjourned discussion : 
‘Yhe Transmission of Electrical Energy by Direct Current on the Series 
System: J. S. Highfield. 
its Production and 
CONTENTS. 
PAGE 
Sir/Charles;Bunburys) (ByiB. D5 ene 
Haileybury Natural History Lectures. By R. L. . 434 
Medical Inspection of SchoolChildren. By C.S.M. 435 
Elementary Physics ,.... 4, 2 fo fon oh AO 
Our Book Shelf :— 
Cornish: ‘Animal Artizans and other Studies of 
Birds and Beasts.’"—R. L. . . a) ty AS 
‘Rubber in the East.” —L. C. B. 437 
Popplewell: *‘Some Modern Conditions and Recent 
Developments in Iron and Steel Production in 
America” . . Ags 
Letters to the Editor: — 
The Positive Charge carried by the a Particle.— 
Frederick Soddy . ele fs) 
The Rusting of Iron. —Dr. Go: “Moody . ; 438 
The Valparaiso Earthquake, August 17, 1906.—R. D. 
Oldham . . . 8 S439 
Nomenclature of the Proteins. —W. S. Gilles . = + 1439 
Maximum Gravitational Attraction on a Solid.— | 
W.E. Miller; Prof. G. H. Bryan, F.R.S. ‘439 
A New Chemical Test for Strength in Wheat Flour.— | 
Dr. E. Frankland Armstrong. . 439 
A Remarkable Lunar Halo, February 24. ei, FE. 1 
Hunt. + + 439 
A Practical Handbook of Burma. " (Ulustrated.) C 440 
Prof. Marcel Bertrand. ByM.M. Allorge . 2 44 
H. C. Russell, C.M.G., F.R.S. By W. E. P. '442 
Dr. Allan Macfadyen. ae De He ere og CUS 
Notes ... ws oats hy a das 
Our Astronomical Column :— , 
Perturbations of Halley's Comet... .. 2... (447 
Stars having Peculiar Spectra - . . 448 
Simultaneous Disparition of Jupiter’s Four Satellites . 48s 
Pk tographs of Faint Stars. . . . 448 
Model to Illustrate Effects of the Eaith’s Rotation. 2148 
Prominence Obseivations (1906) . . u . 2448 
Meteorological Observations. (///ustrated.) amet 48 
Vox Populi. (With Diagram.) By Dr. Francis 
Galtca, F-RoS.  . Pager Orr 32) 
The V’ork of the Optical Society : 320 vel gem 
The Compressibility of Crystalline Rocks. By A. Hy. 4\51 
Cyrnogenesis in Plants and the Constitution of | 
aaseolunatin . . Bag cia ZGe 
versity and Educational Intelligence . Fico. tye) 
HEES HAG ACEI NICS. 5 po bog SO Oo «454 
Diary,ofiSocieties, (00 25 syle ome ene ane 4456 
