440 



NATURE 



[January 30, 19 19 



o| hi entirely white shell amongst the Cvprasidse. 

 (3) The specific identity of the West Indian Cvpraca 

 henikeri, Sowerby, and <>f the Easl Indian C. 



murisitniUs , Martin, with the descripti il a new 



pecies 01 variety, C. blandiana, and remarks on 

 some related forms. A collection ol Losvei Miocene 

 fossils from San Domingo, presented to the Geo- 

 logical Survej of India 1 . \ Prof. Gabb in 1874, con- 

 tains a line- specimen of C. henikeri, Sowerby, the 

 study of which has established its specific identity 

 with C. niiirisiniilis, Martin, from the Lower Miocene 

 and Vindobonian of Java. This shell is usually 

 characterised by dorsal protuberances similar to those 

 observed in the closely related living species, ('. mus, 

 Linn. Associated with ('. heniheri at San Domingo 

 is a hitherto unrecorded fossil, here described under 

 the name of C. blandiana as a variety of C. henikeri' 

 or as a closely related species. 



BOOKS RECEIVED. 



Pharmacy, Theoretical and Practical, including 

 Arithmetic of Pharmacy. By Prof. E. A. Ruddiman. 

 Pp. vi + 267. (New York: J. Wiley and Sons, Inc.; 

 London : Chapman and Mall, Ltd.) Si. 6ii. net. 



The Examination of Milk for Public Health Pur- 

 poses. By J. Race. Pp. vi + 224. (New York: J. 

 Wiley and Sons, Inc.; London: Chapman and 

 Hall, Ltd.) 8s. 6d. net. 



L'Insidia Sottomarina e Come fu Debellata con 

 Notizie sul Recupero delle Navi Affondate. By E. 

 Bravetta. Pp. vii+461. (Milano : l T . Hoepli.) 



Faith in Fetters. By the Rev. T. R. R. Stebbing. 

 Pp. 223. (London; T. Fisher Unwin, Ltd.) 65. net. 



Rudiments of Handicraft. By W. A. S. Benson. 

 Pp. 40. (London: J. Murray.) is. net. 



Solid Geometry, including the Mensuration of Sur- 

 faces and Solids. By Prof. R. S. Heath. Fourth 

 edition. Pp. 123. (London : Rivingtons.) 4s. 



A Star Alias and Telescopic Handbook (Epoch nun) 

 for Students and Amateurs. By A. P. Norton. Pp. 

 25 + maps 16. (London and Edinburgh : Gall and 

 Inglis.) 



Anuario del Observatorio de Madrid para 19 19. 

 Pp. 741. (Madrid : [mprenta de la Casa Editorial 

 Bailly-Bailliere, 1918.) 



The Earth's Axes and Triangulation. By J. de 

 Graaff Hunter. (Survey of India. Professional 

 Paper No. 16.) Pp. viii + 2 19 + charts vi. (Dehra 

 Dun: Office of thi rrigonometrical Survey, 191S.) 



5 s - 4^- 



Scientific Reports of the Agricultural Research 

 Institute. Pusa. (Including the Report of the Imperial 

 Cotton Specialist, 11,17-18.) Pp 1V4-144 + XX plates. 

 (Calcutta: Superintendent Government Printing, 

 India, 191S.) ?s. 



DIARY OF SOCIETIES. 



ROYAL Ins 



THURSDAY. I am 

 at 3.— Srof. I X. ' oil 



: Chemical Sunlit:* of Oriental 



Royal Socirtv, at 4.50.— Prof. I. C McLennat 

 An Invesi 1 yi eme Ultra - iolet Specti 



Grating Spi Prof. J. ('. McLenna 



Young The > tra and 1 he lonisatii 



.nun. Strontium. . . I', .t. [. ('. Mi Umrra 



D. S Fuller : Vac. urn. pectra of various Elemi 



Ultra-violet K.I.I' I i ion and Absorpt 



Spectra ofMen ury, Zim nium. -E. Wilson 



.f MagRetu rmsceptibllil Order, Di. F. B 



Davies: An Experimental 1 of the I 



Electrons in Helium. 



FRIDAY. 1 

 Royal Institution, at 5.30.— 'Prof. II. H. Turnel 



MONDAY. Ft 

 Victoria Institute, at 4 .y>. — Rev. H. I R. Mi 

 ,p Butler. 



NO. 2570, VOL. I02] 



mil R. |. Lang: 

 with a Vacuum 

 and T. F. T. 

 Potentials of Cat- 

 D. S. Ainslie, and 

 :s in the Extreme 

 1 in the I11I1.1 r.il 

 The Measurement 

 and Ann C. 

 Potential tear 



lidential 

 1 tiding. 

 Philosophy as 





, at 5.30.— w. K. 1 u ; 



. . 



A at S. — Prof. Wildon C 



Monadolosy. 



TUESDAY, February 4 . 

 Royal Institution at 3.— Prof. J. T. MacGregor-Mon 



1 ! li and their Applications. 



Zoological Socirtv, at 5.30. — Sir Douglas M ralasian, 



I v Suh antarctic Life. — R. I. Pocock : The External Charac- 



ters ol the Existing Chevrotains. 



I'. rci . .u 15.— Dr. F. Hernaman-Johnson P ted in 



1 1 1 ..tic Work ; a Consideration of the Effei 1 



1 Dr. \V. Makower : A I.angmuii I , I 



WEDNESDAY. February 3. 



Royal Society op Arts, at 4.30. — Ed. C. de Scgundo : The Removal 



of the Residual Fibres from Cotton-seed and their Value for Non-textile 



r.i M.K.i, u 5 M v. at 1.30.— Dr. A. L. Du Toit : The Geology of the 

 Marble Delta Natal. 



Publi Analysts, at 2.— Annual General Meeting 

 Pullman: Recovery of Nessler Reagent. — John Allan: Tecbnti 

 Iodine Determinations : with a Note on a New Mat bine for Subdi 

 Oleaginous Seeds. 



THURSDAY. FEBRUARY 6. 



Royal Institution, at 3. — Dr. \V. Wilson : The Movements of the Sun, 

 Earth, and Moon. 



ROYAL SoCIETY.at 4. )o.—Pro/>ab/t Papers: A. Mallock : The 1.1. 

 of Me.. ,K as Affected by Temperature.— W. I.. Cowley and H. Levy: 

 Vibration and Strength of Struts and Continuous lieams under End 

 Thrusts. A. Iky: A New Method for llie Absolute Determination of 

 Frequency (with a prefatory note by C. V. 1 



Linnkan Sociktv, at 5.— N. E. Brown: (r) Old and New 

 Mesembryanthemum, 'with Critical Remarks. (2) A New 

 Lobosteroon in the Linnean Herbarium. — Dr. J. K. 1 

 of Mi. ■ [,oa from Epping Forest. 



CHBMIl al Soi iktv. at 8.— G. N. White : A Note on the Action of Chloro- 

 form on certain \r\l Mercaptans in Presence of Caustic Soda. — J. T. 

 Hewitt and W. I. [ones: (1) The Estimation of the Methoxyl Group. 

 1 . The Estimation of Methyl Alcohol in Wood Distillates and tneir 

 Concentrates. — P. F. Frankland. V. Challenger, and N. A. Nicholls : The 

 Preparation of Monomethylamine front Chloropicrin. — W. C. McC. 

 Lewis : Studies in Catalysis. Pari x. Preliminary Note upon the Applica- 

 bility of the Radiation Hypothesis to Heterogeneous Reactions. 



FRIDAY, February 7. 

 Royal Institution, at 5.30. — Prof. J. G. Adami : Medical Research in 

 its Relationship to the War. 



Species 



F.xhihiti 



CONTENTS. p 



Science in Parliament 



Physics : Ancient and Modern. By N. R. C. . . 

 Applied Anatomy. By Prof. G. Elliot Smith, F.R.S. 



Fruit Culture 



Our Bookshelf 



Letters to the Editor: — 



Cyclones.— W. H. Dines, F.R.S. ; Dr. John 

 Aitken, F.R.S 



End-products of Thorium.— J. R. Colter .... 

 Commercial Aviation and the Large Aeroplane. 



By E. F. R 



The Times Weather Reports 



Pitchblende Ore in Devon 



Notes 



Our Astronomical Column : — 



Schorr's Comet 



A Curious Feature on Jupiter 



The Paris-Washington Longitude . .... 



The Electrolytic Dissociation Theory. By G. S. . 

 The Inheritance of Milk and Fat Production in 



Cattle 



Some Developments in Industry during the War. 



By F. G. Kellaway, M.P. 



University and Educational Intelligence 



Societies and Academies 



Books Received 



Diary of Societies 



4-1 

 422 



425 



427 

 427 

 42S 



432 

 432 

 432 

 432 



436 

 437 

 440 

 440 



Editorial and Publishing Offices : 

 MACMILLAX AND CO., Ltd., 

 MARTIN'S STREET, LONDON, W.C.2. 



ments and business letters to be addressed to the 



Publishers. 



Editorial Commtmirations to the Editor. 

 i Put-sis, London. 



Number: Gerrard 8S30. 



