400 



NATURE 



[July 17, 1919 



dula, Salisbury; and Tsuga jeffreyi, A. Henry. The 

 last is a peculiar hemlock spruce, originally raised at 

 Edinburgh in 1851 from seeds collected by Jeffrey. It 

 has recently appeared again at Cowichan Lake, 'Van- 

 couver Island, from which locality a single plant has 

 been sent to Knapton, Abbeyleix, Ireland. 



Calcutta. 

 Asiatic Society of Bengal, June 4.— N, Nath Sen: 



Interaction of phosphorus halides and arsenious and 

 arsenic compounds. — H. H. Haines : Some new 

 species of plants from Bihar and Orissa.— H. C. 

 Das-Gupta : Notes on the Panchet reptile. In part i. 

 a few bones of the celebrated Panchet reptile ob- 

 tained from the neighbourhood of Asansol are 

 described, and in part ii. the question of the sys- 

 tematic position of the reptile is reviewed, as of late 

 doubts have been raised regarding its Dicynodont 

 nature. An examination of all the materials available 

 shows the author that though, without the discovery 

 of an entire skull, the zoological position of the 

 Panchet reptile cannot be definitely settled, there is 

 no reasonable ground to suppose that Lydekker was 

 mistaken when he placed the Panchet reptile under 

 his new generic name Ptychosiagum = Ptychognathus, 

 Owen. The only other genus, with which some of the 

 Panchet bones agree is Oudenodon, but the presence 

 of tusks shows that it cannot be assigned to that 

 genus.— H. C. Das-Gnpta : Note on a mammalian 

 fossil from Bhavanagar (Kathiawar)'. In this paper 

 the author has described a mammalian humerus ob- 

 tained at Hathab. The fossil is fragmentary, and 

 no generic determination is possible. It is, how- 

 ever, interesting as being the first record of a Gdj 

 mammal obtained in Kathiawar. 



BOOKS RECEIVED. 



A Comparative Study of the Bantu and Semi-Bantu 

 Languages. By Sir H. H. Johnston. Pp. xi+815. 

 (Oxford : At the Clarendon Press, 19 19.) 3Z. 35. net. 



Eugenics and Environment. Bv Prof. C. L 

 Morgan. Pp. 82. (London: John "Bale, Sons, and 

 Danielsson, Ltd., 1919.) 2s. net. 



The Problem of Sex Diseases. By Major A. 

 Corbett-Smith. Second edition. Pp. xv+ 107. 

 (London : John Bale, Sons, and Danielsson, Ltd., 

 1919.) 2^. 6d. net. 



Salt and the Salt Industry. By A. F. Calvert. 

 (Pitman's Common Commodities and Industries 

 Series.) Pp. vii+151. (London: Sir Isaac Pitman 

 and Sons, Ltd., n.d.) 2s. 6d. net. 



The Return to Oxford : A Memorial Lay. By W. 

 Garstang. Pp. 14. (Oxford : B. H. Blackwell, 1910.) 

 IS. net. 



The Mechanism of Evolution in Leptinotarsa. Bv 

 W. _L. Tower. (Publication No. 263 of the Carnegie 

 Institution of Washington.) Pp. viii + 384+i9 plates. 

 (Washington : Carnegie Institution, igi8.) 



History of the Theory of Numbers. Vol. i,, Divisi- 

 bility and Primality. By Prof. L. E. Dickson. (Pub- 

 lication No. 256 of the Carnegie Institution of 

 Washington.) Pp. xii + 486. (Washington: Carnegie 

 Institution, 19 19.) 



The Adolfo Stahl Lectures in Astponomy. Delivered 

 in San Francisco, California, in 1916-17 'and 1917-18, 

 under the auspices of the Astronomical Societv of the 

 Pacific. Pp. xiv + 257-Miii plates. (San Francisco: 

 Astronomical Society of the Pacific.) 2.75 dollars. 



Probl^mes Scientifiques d 'Alimentation en France 

 pendant la Guerre. Bibliographie Analvtique des 

 Travaux Frangais publics pendant la Guerre {1914-18). 

 Par R. Legendre. Pp. 160. (Paris : Masson et Cie, 

 1919.) 6 francs net. 



NO. 2594, VOL. 103] 



Number Stories of Long Ago. By Prof. D. E. 

 Smith. Pp. vii+136. (Boston, Mass., and London: 

 Ginn and Co., 1919.) 2s. 3d. net. 



Number Puzzles before the Log Fire: Being those 

 Given in the "Number Stories of Long Ago." By 

 Prof. D, E. Smith. Pp. iv+14. (Boston, Mass., 

 and London : Ginn and Co., 1919.) 6d. net. 



Board of Agriculture and Fisheries. Guides to 

 Smallholders. No. 3 : Co-operation for Small Pro- 

 ducers. Pp. 15. (London : Secretary of Board, 

 3 St. James's Square, London, S.W.i, 1919.) 2d. 



Board of Scientific Advice for India. Annual Report 

 for the Year 1917-18. (Calcutta : Superintendent, 

 Government Printing, India, 1919.) 14 annas, or 

 IS. 3d. 



DIARY OF SOCIETIES. 



THURSDA y, JuLV 17. 

 Society of Chemical Industry (at the Salters' Hall, St. Swithin's Lane, 

 E.C.), at 10.30 a.m. -I p.m., and 3-5 p.m.— Conference on Dye Stuffs, 

 Synthetic Drugs, and Associated Products. Dr. Herbert Levinstein : 

 Progress in the British DyestufF Industry.— James Morton : Dyestuffsand 

 British Textiles— Prof. G. T. Morgan : Certain Colour-producing Inter- 

 mediates.— E. v. Evans : The Manufacture of Intermediates. — F. H. 

 Carr : The Manufacture of Synthetic Drugs.— Dr. W. R. Innes : Photo- 

 graphic Chemicals.— Dr. M. O. Forster : The Organised Preparation of 

 Laboratory Chemicals.— At the Goldsmiths' Hall, Foster Lane, E.C., at 

 10.30 a.m.-t p.m.— Conference on the Chrome Tanning Industry. 

 Prof. D. McCandlish: The Development of the Chrome Tanning 

 Industry in the United States of America. — M. C. Lamb : The 

 Progress of the Chrome Tanning Industry in Great Britain.— Dr. 

 Gordon Parker: The War Services of the Chrome Tanning Industry.— 

 At 3-5 p.m.— Conference on Recent Developments in the Fermenta- 

 tion Industries. Sir Frederick Nathan : 'The Manufacture of Acetone.-;- 

 Amos Gill : The Acetone Fermentation Process and its Technical Appli- 

 cations.— A. Chaston Chapman : The Employment of Micro-organisms in 

 the Service of Chemical Industry— A Plea for a National Institute of 

 Micro-biology. 



CONTENTS. PAGE 



The Figure of the Earth. By E, H. H 381 



Plant Physiology. By W. R. G, A 381 



Abnormal Psychology and Education. By T. H. P. 382 



Our Bookshelf . 383 



Letters to the Editor:— 



Electro-Atomic Phenomena in the Magnetic Field. — 

 Prof. Augusto Righi, For.Mem.R.S. ; Dr. 



Norman R. Campbell 384 



The Collection and Presentation of Public Statistics. 



—Geoffrey Drage 385 



The Fisheries and Scientific Research. By J. J. . 385 



An Undeveloped Aspect of Engineering Training . 387 



Reconstruction Problems 387 



The Return of R 34 • 388 



Notes 389 



Our Astronomical Column:— 



The Movement of the Earth's Pole 392 



The Masses of Binary Stars 392 



Science in Industry: Lectures at the British 



Scientific Products Exhibition . 392 



American Astronomy 394 



The Museums Association • . . 394 



The North-East Coast Institution of Engineers 



and Shipbuilders 395 



The Significance of the Cerebral Cortex 396 



University and Educational Intelligence 397 



Societies and Academies 398 



Books Received . ........... 400 



Diary of Societies 400 



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Advertisements and business letters to be addressed to the 

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Editorial Communications to the Editor. 

 Telegraphic Address : Phusis, London. 

 Telephone Number: Gerrard 8830. 



