56 NATURE 
[Marcu II, 1915 


BOOKS RECEIVED. 
The Carnegie United Kingdom Trust. First 
Annual Report. Pp. 34. (Edinburgh: T. and A. 
Constable.) 
Memoirs of the. Geological Survey of India. 
Palzontologia Indica. Vol. v. Memoir No. 2. The 
Anthracolithic Faunz of Kashmir, Kanaur, and Spiti. 
By Dr. C. Diener. Pp. 135+plates xi. (Calcutta: 
Geological Survey; London: Kegan Paul and Co., 
Ltd.) 
Twenty-seventh Annual Report of the Purdue Uni- 
versity Agricultural Experiment Station, Lafayette, 
Indiana. Pp. 88. (Lafayette: Haywood Publishing 
Co.) 
Clark University, Worcester, Mass. Register and 
Twenty-seventh Official Announcement. 1eeyy aie 
(Worcester, Mass. : Clark University.) 
Memoirs of the Geological Survey, Scotland. Ex- 
planation of Sheet 74. The Geology of Mid- Strathspey 
and Strathdearn. By L. W. Hinxman and E. M. 
Anderson. Pp. v+97. (Gonden;; HM.S.O:; E- 
Stanford, Ltd.) 2s. 6d. 
Memoirs of the Geological Survey, England and 
Wales. Explanation of Sheet 269. The Geology of 
the Country around Windsor and Chertsey. By A. 
Dewey and C, E. N. Bromehead. ee vi+123. (Lon- 
don: H.M.S.O.; E. Stanford, Ltd. 2s. 6d. 

DIARY OF SOCIETIES. 
THURSDAY, Marcu 1t. 
Rovat Society, at 4.30.—Contributions to the Study of the bionomics 
and Reproductive Processes of the Foraminifera: E. Heron-Alien.—The 
Occurrence of an Intracranial Ganglion upon the Oculomotor Nerve in 
Scyllium Canicula, with a suggestion as to its Bearing upon the question 
of the Segmental Value of certain of the Cranial Nerves : E. Nicholls. 
—Experiments on the Restoration of Paralysed testi by Means of 
Nerve Anastomosis. III.—Anastomosis of the Brachial Plexus, with a 
consideration of the Distribution of its Roots: Prof. R. Kennedy.—On 
the Mechanism of the Cardiac Valves. A Preliminary Communication : 
A. F. S. Kent. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.—Electric Cooking, mainly 
from the Consumer's Point of View: W. R. Cooper. 
CuiLp Stupy Society, at 6.—Discussion : The Care and Development of 
the Child—during School Age —Treatment Centres and their Possibilities: 
Miss Margaret McMillan.—Care Committees: Mrs. Evelyn. 
FRIDAY, Marcu 12. 
Roya. InstiTuTION, at 9.—Back to Lister: Sir R. J. Godlee. 
Puysical. Society, at $.—(1) The Estimation of High Temperatures by the 
Method of Colour Identity: (2) The Unit of Candle-power in White 
Light: C. C. Paterson and B. P. Dudding.—The Relative Losses in 
Dielectrics. in Equivalent Electric Fields, Steady and Alternating 
(R.M.S.): G. L. Addenbrooke. 
MALAcoLocicat Society, at 8.—Helicella crayfordensis, n.sp. from the 
Pleistocene deposits of S.E. England: A. S. Kennard and B. B. Wood- 
ward.—Further Notes on Radule : the Rey. E. W. Bowell.—The Editions 
of Swainson’s ‘“‘ Exotic Conchology": A. Reynell. 
Royat AsTRONOMICAL SocIETY, at s.—Double Stars Measured at the 
Cape: J. Vofite.—Comet Westland: E. H. Beattie.—A General Solution 
of Hill’s Equation : E. Lindsay Ince.—Note on the Comparison of Two 
Plates of the Same Region in the Vatican Zones of the Astrographic 
Catalogue: Ethel F. Bellamy. -— Probable Papers: The Dynamics of a 
Globular Stellar System. II.: A. S. Eddington.—The Secular Accelera- 
tion of the Moon’s Mean Motion, as Determined from the Occultations in 
the Almagest: J. K. Fotheringham and Gertrude Longbottom. — Micro- 
metrical Measures of Double Stars made in 1914: Rev. T. E. R. Phillips. 
SATURDAY, Marcu 13. 
Roya InstiTUTION, at 3.—Recent Researches on Atoms and Ions: Sir 
J. J. Thomson. 
MONDAY, Marcu is. 
ee Society, at 8.—The Philosophy of Values: Dr 
ones, 
Victoria INSTITUTE, at 4.30.—The Determination of Easter Day: Dr. 
A. M. W. Downing. 
Roya Society oF Arts, at 8.—House Building: M. H. Baillie Scott. 
TUESDAY, Marcu 16. 
Roya InstiTuTION, at 3.—The Belief in Immortality among the 
Polynesians : Sir J. G. Frazer. 
RoYAL STaTIsTICaL SOCIETY, at 5.15.—The Cost of the War: E. Crammond. 
ILLUMINATING ENGINEERING Society at 8.—Dzéscussion : The Marking 
and Rating of Lamps and the best methods of specifying their Illuminat- 
ing Value. 
Miveratocicat Society, at 5.15.—The Dispersion of Adularia from 
St. Gothard, Felspar from Madagascar, and Moonstone from Ceylon : 
ae S. Kézu.—-The Meteoric Stone of Launton, Oxfordshire : Dr. G. T. 
Tior. 
Tudor 
NO. 2367, VOL. 95] 

WEDNESDAY, Marcu 17. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 7.45.—Students’ Section 
Some Experiments on the Induction Generator: W. H. Date. 
RovaL Society oF ARTs, at 8.—The Industrial Uses of Coal Gas: H. M. 
Thornton. 
Royat MeTeEoRQLOGICAL Society, at 7.30.—The Meteorology of the 
Sun: Dr. W. Geoffrey Duffield. 
ENTOMOLOGICAL SOCIETY, at 8. 
Roya Microscopicat Society. at 8.—A New Mitotic Structure Disclosed 
as the Result of New Technique: E. J. Sheppard —Notes on the 
Structure of Tests of Fresh-water Rhizopoda: G. H. Wailes. 
THURSDAY, Marcu 18. 
Royat Society, at 4.30.—Bakerian Lecture: X-rays ard Crystals: Prof. 
W. H. Bragg. 
Roya LNsTiruTION, at 3.—The Form and Structure of the London Basin: 
Ir. A, Strahan. 
Royal Society oF ARTS, at 4.30.—The Indian Army: Lieut.-Colonel 
A. C. Yate. 
INSTITUTION OF MINING AND METALLURGY, at 8.—Annual Meeting. 
FRIDAY, Marcu 19. 
Royat InsTiITUTION, at 9.—The Modern Piano Player—Scientific Aspects = 
Prof. G. H. Bryan. 
INSTITUTION OF MECHANICAL ENGINEERS, at 8.—The Chemical and 
Mechanical Relations of Iron, Cobalt, and Carbon: Prof. J. O. Arnold 
and Prof, A. A. Read. 
SATURDAY, Marcii 20. 
Roya INSTITUTION, at 3.—Recent Researches on Atoms and Jons: Sir J. J. 
Thomson. 

CONTENTS. PAGE 
A Text-Book of Forestry . . SECM es cane 5 2S, 
The Languages of Southern Nigeria. By Sir H. H. 
Johnston; iG:C..M.G.; KiCIBS) > cease) =) ence 
Household Insects. By Gone, a. PI! 0 SO 
Geographical) Text-Books 350.) -)) 2) Sa en eee n 
Our Bookshelf ees vc ic big sy ago ee an 
Letters to the Editor :— 
Resonance of Sodium Vapour in a Magnetic Field.— 
Hon. R. J. Strutt, F.R.S. 33 
The Spectra of Hydrogen and Helium. _Prof, ig w. 
Nicholson... 33 
A Neglected Correction in Osmotics. —The Earl of 
Berkeley, F.R.S. : bale) 34 
Chemistry and Industry. —Justin. E. Pollak . . . aot 
Measurements of Medieval ee Femora.—Dr. 
F.G. Parsons... sy ne a eee 
The Green Flash.—C. T. Whitmell, .. 1... 35 
The Prices of Chemicals.—J. J. 36 
Through Siberia. Sides By Prince Kropotkin 36 
A Biological Puzzle Ae ouch: 
Prof. James Geikie, F.R.S. By J. w. J. --f) 28140 
Emile-Hilaire Amagat. By ©. H. Ee: <f 204) See 
Notes*. | 3 Mens 8) fc SY os] ule, career 
Our Astronomical Column :— 
Mellish’s Comet . . cig) (cy eA 
The British Eclipse Expeditions of 1914 . 5) clwct, eae 
Astronomy in America . . - . 46 
Grundspectra of Alkali and Alkaline Earth Metals « - 46 
Electrons in the Sun’s Atmosphere . . 46 
The Chemical Industries of Germany. By Prof. 
Percy Frankland, F.R.S.. . . 47 
British Association Discussion of ‘the Nature and 
Oniginiof Species: )Byjdi-s)sn eee eee 
Forthcoming Books of Science . . 2 ae a 
The Second Indian Science Congress | i oA 
University and Educational Intelligence. . . ... 53 
Societies and Academies . ae: Cys cys de 
BooksiReceived js)... J) .0se eared + = =) 1s @, nO) 
Diarysof Societies, : G2 eaeeeeoee al) = eo 


Editorial and Publishing Offices: 
MACMILLAN & CO., Ltp., 
ST. MARTIN’S STREET, LONDON, W.C. 
Advertisements and business letters to be addressed to the 
Publishers. 
Editorial Communications to the Editor. 
Telegraphic Address: Puusts, LONDON. 
Telephone Number: GERRARD 8830. 
