96 



NATURE 



[March 23, 1916 



BOOKS RECEIVED. 



The Structure and Properties of the More Common 

 Materials of Construction. By G. B. Upton. Pp. 

 v + 327. (New York: J. Wiley and Sons, Inc.; Lon- 

 don : Chapman and Hall, Ltd.) io5. 6d. net. 



A Text-Book of Practical Physics. By Dr. H. S. 

 Allen and H. Moore. Pp. xv + 622. (London: Mac- 

 millan and Co., Ltd.) 8,s. 6d. net. 



Institution of Electrical Engineers. Wiring Rules. 

 Seventh edition. Pp. 54. (London : E. and F. N. Spon, 

 Ltd.) 6d. 



Catalogue of the Fresh-Water Fishes of Africa in 

 the British Museum (Natural History). By G. A. 

 Boulenger. Vol. iv. Pp. xxvii + 392. (London : 

 British Museum (Natural History) ; Longmans and 

 Co.) 30s. 



Electrical Apparatus Making for Beginners. By 

 A. V. Ballhatchet. Pp. 164. (London : P. Marshall 

 and Co.) 2s. net. 



The Meaning of Dreams. By Dr. I. H. Coriat. 

 Pp. xiv+194. (London: W. Heinemann.) 5s. net. 



Sleep and Sleeplessness. By H. A. Bruce. Pp. 

 ix + 219. (London : W. Heinemann.) 55. net. 



Human Motives. By Prof. J. J. Putnam. Pp. 

 xvii+179. (London: W. Heinemann.) 55. net. 



Warwickshire. By J. H. Bloom. Pp. xi+144. 

 (Cambridge : At the University Press.) is. 6d. net. 



A Handbook of Colloid-Chemistrv. By Dr. W. 

 Ostwald. Translated by Prof. M. 'H. Fischer. Pp. 

 xii + 278. (London : J. and A. Churchill.) 12s. 6d. 

 net. 



A System of Physical Chemistry. By Prof. W. C. 

 McC. Lewis. Vol. i., pp. xiv + 523. Vol. ii., pp. vii + 

 552. (London : Longmans and Co.) 9s. net each. 



A History of British Mammals. . By G. E. H. 

 Barrett-Hamilton and M. A. C. Hinton. Pp. xviii. 

 (London : Gumey and Jackson.) 25. 6d. net. 



Canada. Department of Mines. Mines Branch. 

 Petroleum and Natural Gas Resources of Canada. 

 Vol. II., Description of Occurrences. Part I., Eastern 

 Canada. Part II., Western Canada. By F. G. Clapp 

 and others. Vol. vIII + 404. (Ottawa : Government 

 Printing Bureau.) 



Mathematical Notes, published by the Edinburgh 

 Mathematical Society. Edited by Dr. P. Pinkerton. 

 Nos. 14, 15, 16. (Edinburgh : Mathematical Society.) 



Ministry of Finance, Egypt. Survey Department. 

 The Magnetic Survey of Egypt and the Sudan. By 

 H. E. Hurst. Pp. 53. (Cairo : Government Press.) 

 P.T.ro. 



The National Physical Laboratory. Notes on Screw- 

 Gauges. Enlarged issue, February i. Pp. 29. 

 (Teddington : W. F. Parrott.) is. 6d. 



DIARY OF SOCIETIES. 



THURSDAY, March 23. 

 Royal Society, at 4.30.— The Main Crests of Ship Waves, and Waves 



in Deep Water due to the Motion of Submerged Bodies : G. Green. — 



Investigation of Atmospheric Electrical Variations at Sunrise and Sunset : 



E. H. Nichols. 

 Royal Institution, at 3. — Organic Products used as Propulsive and 



Explosive Agents : Prof. H. E. Armstrong. 

 Institution of Mixing and Mktau.urgy, at 5.30. — Annual General 



Meeting. — Presidential Address : Sir Richard A. S. Redmayne. 



FRIDAY, March 24. 

 Royal Institution, at 5.30,— The Mechanism of Chemical Change in 



Living Organisms : Prof W. M. Bayliss. 

 Physical Society, at 5. — A New Method of Determining Ionic Velocities : 

 Mrs. Griffiths. — (i) An Explanation of the Migration of Ions ; (2) A Method 

 of Exhibiting the 'Velocities of Iodine Ions in' Solution : Dr. S. W. J. 

 : Smith. ■ . 



SATURDAY, March 25. 

 Royal Institution, at 3. — Radiatio-s from Atoms and Electrons : Sir 

 . J. J. T'homson. 



Essex Field Club (at the Essex Museun), Stratford), at 3.-7Annual 

 Meetine. — Prehistory in Essex, as Recorded in the Journals of the Essex 

 Field Club : S. Hazzledine Warren. 



NO. 2421, VOL. 97] 



MONDAY, March 27. 

 RovAL Society OF Arts, at 4.30 —Surveying: Past and Present: E. A. 



Reeves. 



TUESDAY, March 28. 

 Royal Institution, at 3.— Modern Horticulture— Plants and the Seasons 



(Seasonal Rhythm): Prof F. Keeble. 

 Royal Society of Arts, at 4.30.— Next Steps in Empire Partnershii; : 



P. Hurd. 

 Royal Anthropological Institute (with the Prehistoric Society of E:. 



Anglia), at 2-4. ^-Grime's Graves and AlKed Cultures : Dr. A. K. Peake. 



The Pleistocene Succession in England : A. S. Kennard. At 5-7. — Hand 



Grips : Miss N. Layard. — Irish MS. and other Evidence of the Use of 



Stone Weapons, including Smooth Stone Celts within Historic Times : 



Rev. F. W. Hayes. 



WEDNESDAY, March 29. 

 Royal Society of Arts, at 4.30. — Pan-German Aspirations in the Ne.ir 



East : Dr. R. W. Seton-Watson. 

 Institute of Metals, at 4. — Presidential Address. At 8. — ^Third Rep-.rt 



to the Corrosion Committee: W. E. Gibbs, R. H. Smith, and Dr. G. 1'. 



Bengough. — The Electrolytic Method of Preventing Corrosion: 1 



Cumberland. — Note on some Tin-Aluminium-Copper Alloys: Prof A. A. 



Head and R. H. Greaves.- — Notes on the Analysis of Aluminium and i' 



Alloys : W. H. Withey. — The Annealing of Nickel Silver : V. C. Thorap^i 



— Electric Furnaces as applied to Non-ferrous Metallurgy: Prof. 



Siansfield. — Transformations in Alloys of Gold and Copper : Dr. N. - 



Kurnakow, S. Zemczuzny and M. Zasedatelev. 



THURSDAY, March 30. 

 Royal Society, at 4.30. 

 Child Study Society, at 6. — The Child Delinquent : C. M. Chapman. 



FRIDAY, March 31. - 



Royal Institution, at 5-30. — The Spectra of Hydrogen and HeliumJ 



Prof. A. Fowler. I 



S^ATURDAY, April i. -| 



RovAL Institution, at 3. — Radiations from Atoms and Electrons : Sil 



J. J. Thomson. \ 



CONTENTS. PAGE 



The Budget of Paradoxes. By G. B. M 77 



Pharmacology 79 



Our Bookshelf 79 



Letters to the Editor: — 



The Liesegang Phenomenon and Concretionary Struc- • 



tiire in Rocks. {Illustrated.) — ^. C. Bradford . . 80 



International Latin. — Dr. W. A. Caspari Si 



Chemical Organisation in Germany During the War. 



By Prof. F. G. Donnan, F.R.S 82 



Economic Geology 83, 



Colonel Sir Charles Watson, C.B., K.C.M.G., R.E. 84 



Notes . 85 



Our Astronomical Column :— 



Opposition of the Minor Planet (4) Vesta. {IVii/i 



Diagram.) '88 



Spectroscopic Observations of Comets 1913/ (Dela van) 



and I9I4<!' (Zlatinsky) 89 



An Atmospheric Effect of Solar Kathode Rays ... 89 



Mr. Ivan Levinstein 89 



Methods and Appliances for the Attainment of High 



Temperatures in the Laboratory 89 



Insects in Africa and the East. By G. H, C. ... 90 



Interesting Foraminifera 90 



Scientific Education and Industrial Research ... 91 

 Use of Fossil Remains of the Higher Vertebrates 

 in Stratigraphical Geology. By Dr. A. Smith 



Woodward, F.R.S 92 



University and Educational Intelligence 93 



Societies and Academies 94 , 



Books Received 96 1 



Diary of Societies 96 



SI, 



Editorial and Pu blishing Offices : 

 MACMILLAN & CO., Ltd., 

 MARTIN'S STREET, LONDON, W.C. 



Advertisements and business letters to be addressed to the 

 Publishers. 



Editorial Communications to the Editor. 

 Telegraphic Address : Phusis, London. 

 Telephone Number : Gerrard 8830. 



