384 
NATURE 
[JANUARY II, 1917 
chromatin with that of its ‘receptor cell’? had been | 
observed, and no exnlanation of the phenomenon was | 
offered. 
PETROGRAD. 
Imperial Academy of Sciences, October 19, 1916.— 
M. D. Zalésskij: The carbon flora discovered by V. N. 
Robinson and I, I. NiksSié in the N. Caucasus.—A. A. 
uprov : The mathematical expectancy of the coefficient 
of dispersion.—V. V. Zalenskij : The fate of the sperma- 
tozoa and the segmentation of the ovum of Salpa 
africana,—I, A. Balanoyskij: The new variable in Her- 
cules.—L. S. Kolovrat-Cervinskij : The disengagement 
-of the emanation from solid or fused radium salts.— 
P. A, Zemiatéenskij: Deposits of fireproof clay in the 
neighbourhood of Latna, on the Kiev-VoroneZ Rail- 
way, Lepecka (Tambov Government), and Cirikov, on 
the Griaze-Orlov Railway (Voronez Government).— 
V. V. Redikorcev: New pseudo-scorpions.—V. A. 
Lindholm ; Contributions to the malacological fauna of 
the Government of Niznij Novgorod.—N. S, Kurnakoy : 
The discovery in Russia of potassium chloride or 
sylvine. 
November 2, 1916.—N. Ja. Cinger: The most useful 
“species of conic projections.—S. I, Metalnikev: The 
problem of the immortality of unicellular protozoa.— 
N. A. Bush: Valuable trees of the Caucasus.—N. V. 
Nasonov: Supplementary notes on Ovis orientalis, 
Gmel.—A. Martynov: Supplementary note on the 
Trichoptera fauna of the Crimea, 
SEcTION oF Historica: SciENcE and PuiLorocy, 
‘October 26, 1916.—N. Ja. Marr: The date of the 
Mosoch migration from Armenia to Svania. 
November 9, 1916.—K. A. Inostrancev : The Charput 
inscription (561 H.). 
BOOKS RECEIVED. 
The High Price of Sugar and How to Reduce It. 
By H. H. Smith. Pp. iv+54. (London: John Bale, 
Ltd.) - 1s. net. 
Atoms. By Prof. J. Perrin. 
Hammick. Pp. xiv+2r1. 
‘Co., Ltd.) 6s. net. 
Laboratory Manual of General Chemistry, with 
Exercises in the Preparation of Inorganic Substances. 
Translated by D. LI. 
(London: Constable and 
By A. B. Lamb. Pp. vit+160+pp. for Notes. (Cam- 
bridge, Mass.: Harvard University Press.) 
Australia. By Prof. J. W. Gregory. Pp. 156. 
(Cambridge: At the University Press.) 1s. 3d. net. 
The Classics of International Law :—Synopsis Juris 
Gentium. By Prof. J. Wolfgang Textor. Edited by 
Prof. L. von Bar. Vol. i., A Reproduction of the 
First Edition. Vol. ii., A Translation of the Text. 
By J. P. Bate. (Washington : Carnegie Institution.) 
The Interferometry of Reversed and Non-reversed 
Spectra. By Prof. C. Barus. Pp. 158. (Washing- 
ton: Carnegie Institution.) 
Sissano: Movements of Migrations Within and 
Through Melanesia. By W. Churchill. Pp. x81. 
(Washington : Carnegie Institution.) 
A Naturalist in Borneo. By the late R, W. C. 
Shelford. Edited, with a biographical introduction, 
by Prof. E. B. Poulton. Pp. xxvii+331+plates xxxii. 
(London: T. Fisher Unwin, Ltd.) iss. net. 
DIARY OF SOCIETIES. 
THURSDAY, January 11. 
Rovat Geocrapnicar. Society, at s.10.—The Amazon River and Unex- 
plored South America: J. Campbe'l Besley. 
INSTITUTION oF ELecTRICAL ExGINEERs, at 8.—Principles Involved in 
Computing the Nepreciation of Plant: F. Gill and W. W. Cook. 
FRIDAY, January 12. 
Rovat Astronomicat Soctety, at 5.—Probable Motions in the Spiral 
Nebula M 51 (Canes Venatici) found with the Stere -Comparator.—S, 
NO. 2463, VOL. 98] 
r 
Kostinsky.—A _ Determination of the Constant of Aberration: S. S. 
Hough.—(1) | he Part played by Rotaticn in Cosmic Evolution cee Note 
on the Action of Viscosity on Gaseous and®Nebular Masses : . Jeans. 
—Observations made at Adelaide during the Annular Eclipse of the Sun, 
July 30, 1916: Adelaide Observatory. F : 
MALACuLoGICAL SociETY, at 8.—/fatel/a vulvata, L., and its so-called 
Vaniery, 2. depressa, Penn.: Rev. Dr. A. H. C oke.—The Occurrence of 
Manganese in Mollusca: Dr. A. E. Boycott.—-Note on the Holotype of 
Crioceratites bowerbanki: J. de C. Sowerby and G, C. Crick. 
MONDAY, JANUARY 15. { 
Vicrorta INSTITUTE, at 4.30.—Christian Mysticism: Very Rey. Dean 
Inge. . 
. TUESDAY, JANUARY 16. 6 * 
Roya Instirution, at 3:—The Old Brain and the New Brain, and their 
Meaning: Prof, C. S. Sherrington. 
Roya STATISTICAL SOCIETY, at 5.15. 
MINERALOGICAL Society, at 5.30.—Tapiolite in the Pilbara Goldfield, 
Western Australia: EK. S. Simpson.—Paleophysiology; the Organic 
Origin of some Minerals occur:ing in Sedimenary Rocks: J. V. 
Samojloff.—The Simondium Meteorite: Dr. G. T. Prior. 
WEDNESDAY, January 17. F 
Rovat MrcroscopicaL Society, at 8.—Presidential Address; Alcide 
d'Orbigny, his Life and his Work: E. Heron-Allen. j 
RoyaL METEOROLOGICAL SociETY, at 5.—Annual General Meeting.— 
Presidential Address: The Winds of North Africa: Major H. G. 
Lyons. 
ENTOMOLOGICAL Society, at 8.—Annual Meeting. 
THURSDAY, January 18. 
LinNEAN Society, at 5.—The Comparative Morphology of the Sorus of 
Ferns: Prof, F, O. Bower. 
MATHEMATICAL SOCIETY at 5.30. , 
Roya. Society or ARTs, at 4.30—Between the Tigris and the Indus. The 
Ben-i-Israel : Sir T. H. Holdich. ‘ PR ae 
CuHemicaL Society, at 8.—Alloys of Copper and Tin, Aluminium and 
Gold : Col. C. T. Heycock. ? 
FRIDAY, JANvARY 19. A ns 
Royat InstiTuTIoN, at 5.30.—Scap Bubbles of Long Duration: Sir 
James Dewar. 
INSTITUTION OF MECHANICAL ENGINEERS, at 6. 
SATURDAY, January 20. 
Royat Institution, at 3.—The Lakes and Mountains of Central Africa of 
A. R. Hinks. 
CONTENTS. PAGE 
Civil Engineering Constructional Work: By , 
NS 7 ip = PL Borage Pah y : Me ns 
Organic Chemistry for Agricultural Students. By ’ 
E. JR: Sdesare Salt eens Miter igo 
Colour. . “By CiJin spss se jcdul eee eee 366 
QuarticSurfaces., By 'G. B. Moo...) 2-0. suena 
Our Bookshelf. . ce 368 
Letters to the Editor:— 
Meteorology and Wheat Shortage.—Prof. G. H. 
Bryan, F.R.S.; Sir Napier Shaw, F.R.S. 
A trost Thistle: A Beautiful Effect of Freezing. j 
(Zlustrated.)—R. T. Gunther. ©). /....5 370 
National Reconstruction . Weert err 
Accessory Factors, or ‘t Vitamines,” in Diet. By . 
Prof. W. M, Bayliss, F.R.S. . . ee  B7e, 
Sir E. B. Tylor, F.R.S. l’y Dr. A. C. Haddon, 
F.R.S. aia ot ti gaa S| Celene ane «ow eae 
Capt. F. C. Selous, By Sir H. H. Johnston, . 
Gr, MiG ik. Grek. pene od aa 
Notes Pel veg aay "a, POR oo) eS. 
Our Astronomical Column :— 
Large Meteor on January 4. . dba 9 inane 
Extra-focal Photometry “) 26 2 00 Wl.) Seg 
Hyderabad Observatory . . ees 379 
Educational Position and Outlook ‘ . | ee 
Prize Awards of the Paris Academy of Sciences rt 
for 1618 (iG 4) ee oe ls Sh 
University and Educational Intelligence ..... 382 
Societies and ‘Academies. .: .) shrews Se . 383 
Books Received - See a) 8h) +, Lo See 
Diary of Societies Peeves . ,:,) 
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