BOOKS RECEIVED. 
Publications of the United States Naval Observa- 
tory. Second series. Vol. viii. Pp. xxxvii+46s. 
(Washington: Government Printing Bureau.) 
Wookey Hole. Its Caves and Cave Dwellers. By 
H. E. Balch. Pp. xiv+268. (London: Oxford Uni- 
versity Press.) 25s. net. 
On the Effects of Volcanic Action in the Production 
of Epidemic Diseases in the Animal and in the 
Vegetable Creation, and in the Production of Hurri- 
canes and Abnormal Atmospherical Vicissitudes. By 
Dr. H. J. Johnston-Lavis. Pp. xii+67. (London: 
John Bale, Sons, and Danielsson, Ltd.) 3s. net. 
The Pupil’s Class Book of Geography. The British 
Isles.. By E. J. S. Lay. Pp. 118. (London: Mac- 
millan and Co., Ltd.) 6d. 
The Elements of Non-Euclidean Geometry. By. Dr. 
D. M. Y. Sommerville. Pp. xvi+274. (London: G. 
Bell and Sons, Ltd.) ss. 
An Elementary Treatment of the Theory of Spinning 
Tops and Gyroscopic’ Motion. By H. Crabtree. 
Second edition. Pp. xv+193. (London: Longmans, 
Green and Co.) 7s. 6d. net. 
Oxygen and Cancer: A Biological and Bio-chemical 
Study. By L. Cresswell. Pp. 43.. (Bradford: Mat- 
thews and Brooke.) 1s. net. 
Proceedings of the Royal Society of Edinburgh. 
Part ii. Vol. xxxiv. Session 1913-14... Pp. 113-208. 
(Edinburgh: R. Grant.) 6s. 4d. 
Meteorological Office. The Seaman’s Handbook of 
Meteorology. A Companion to the Barometer Manual 
for the Use of Seamen. Pp. vi+191. (London: 
H.M. Stationery Office; Wyman and Sons, Ltd.) 2s. 
Supplement to the Indian Journal of Medical Re- 
search. Proceedings of the Third All-India Sanitary 
Conference held at Lucknow, January 19-27, 1914. 
Vol. i. Discussions and Resolutions. Pp. ix+367. 
(Calcutta : Thacker, Spink and Co.) 
Die vorzeitlichen Saugetiere. By O. 
V+309. (Jena: G. Fischer.) 8.50 marks. 
Philosophical Transactions of the Royal Society of 
Abel: = Pp: 
London. -Series Bi Volk cev.- On the Floral 
Mechanism of Welwitschia mirabilis, Hooker. By 
Dr. As THs °Church: * Pp. 115-151. (London: Royal 
Society.) 
Complex Ions in Aqueous Solutions. 
By Dr. A. 
Jaques. Pp. vi+1s5r1.- (London: Longmans, Green 
and Co.) 4s. 6d. net. 
Wild Life in the Woods and Streams. By Coe 
Palmer. Pp. xv+206. (London: A. and C. Black.) 
3s. 6d. 
Institute of Metals. First Report to the Beilby 
Prize Committee of the Institute of Metals on the 
Solidification of Metals from the Liquid State. By 
Deel Deseh —Pp.:.57—-1718) (London.) 
Institution of Engineers and Shipbuilders in Scot- 
land. Session 1913-1914. Some Causes of Injury to 
Steel after Manufacture. By Dr. C. H. Desch. Pp. 
33-, (Glasgow.) 
Akta Parlan Eller Lifsgatan vid Dagsljus Lost 
Medelst Sanning of Sanning. Pp. 100. (Goteborg.) 
An Introduction to the Study of Plants. By Dr. 
Be Beiischeand wp. J. Salisbury. Pp. viii+ 
397. (London: G. Bell and Sons, Ltd.) 4s. 6d. net. 
Optical Rotatory Power. Reprinted from the 
Transactions of the Faraday Society, Vol. x., Part i. 
Pp. 96. (London: Faraday Society.) 7s. 6d. 
Solutions of the Exercises in Godfrey and Siddons’s 
Shorter Geometry. By E. A. Price. Pp. viii+ 160. 
(Cambridge University Press.) 4s. 6d. net. 
Linear Algebras. By Prof. L. E. Dickson. Pp: 
viii+72. (Cambridge University Press.) 3s. net. 
Geological Literature added to the Geological 
NO“2335, VOL. Q3i| 
NATURE 
[Jury 30, 1914 
Society’s Library during the Year ended December 
31, 1912. Pp. 266. (London: Geological Society.) 
28. 
A Little Book on Map Projection. By Mary Adams. 
Pp. viii+ 108. (London: G. Philip and Son, Ltd.) 2s. 
Liverpool Marine Biology Committee. L.M.B.C. 
Memoirs on Typical British Marine Plants and 
Animals. XXII. Echinoderm. Larve: By H. C. 
Chadwick. Pp. viii+32+ix plates. (London : 
Williams and Norgate.) 2s. 6d. 
Meteorological Office. Hourly Values from Auto- 
graphic Records: Geophysical Section, 1912. Pp. 83. 
(Edinburgh: H.M. Stationery Office; London: 
Meteorological Office.) 3s. ( 
The Practice of Navigation and Nautical Astron- 
omy. By Lieut. H. Raper. _Twentieth _ edition, 
revised and enlarged. Pp. xxv+934+41. (London: © 
J. D. Potter.) 
CONTENTS. PAGE 
Mammalian Evolution. By C. W..A>. . 2... .. 553 
The Production and Utilisation of Crops. By 
Beye R. . . . LSM bee dh ular semen emae 553 
Robperts=Apsten. , BysSire la KepROsey eee 555 
New Books: on Chemistry7 Byles, Cale) ee 555., 
Our Bookshelf ; Sees SG! £04 0 ¢ ee ere 556 
Letters to the Editor :— 
Rayleigh’s Law of Extinction and the Quantum Hypo- 
thesis. —Prof. Louis V. King. . . “dea 
The Destruction of Wild Peafowlin India.—SirH. HH. |. 
johnston, G:C MiG wk CiBe ee » aa 
The Australian Meeting of the British Association 559 
The Electric Emissivity and the Directive Disin-. 
tegration of Hot Bodies. (/d/ustvated.) By Dr. 
GAs .C. Kaye) i) 6. yh tee ire A seme Boats 561 
A Forged ‘‘ Anticipation” of Modern Scientific 
Ideas TPS Ce tema: gee Se aS fo 563 
mheslcangley Flying Machine: 5... ans) > pce 564. 
IWOTES ft i Ars ie A eee aera 564 
Our Astronomical Column :— 
Comet: 19137 (Delavan). 2) eile ete tn eee 569 
Astronomical Notes for August, I91g4 ....... 569 
The Meteoric Shower of Perseids. . . .... + -- 569 
Photometric Tests of Spectroscopic Binaries 570 
Watitude Variation 1Ons"Osto LOl4:O}. ss ee 570 
BuGlose Companion tomPpAT aus seer enn ne mete E570 
Relics of a Lost Culture in Arizona. (Jl//ustrated.) 
By Dr. A. C. Haddon, F.R.S. Pee «ltt ON 
The Principal Triangulation of the United King- 
Gkoveol pelehgye CRO a cus a4 td olo Bt oc « 571 
mhesbonaparte’ Hund eee Se si/e 
Napier Tercentenary Celebration. By Dr. C. G. 
Knott . Ret 6 eae ; os ob se ee 2 
The Stars Around the North Pole. (W2zth Diagrams.) 
ByeDr ok. W. Dyson; FURsS: 5 02) fone Cue 574 
University and Educational Intelligence. ..... 577 
Societies and Academies >) > 78°. =] 4. 577 
Bookstiveceived’. |<. 5° gwen seer eee mee 578 
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