XXXVl 



Index 



r Nature, 



\_Septentber 26, 1918 



Wolf Planet, The New, G. Stracke, 30 



Wolf's Nova, 52 



Wolf's Periodic Comet : Ephemeris of, M. Kamensky, 375 ; 



Discovery of, R. Jonckheere, 393, 479 ; M. Kamensky, 



iiqi • 

 Wolmer Pond, near Liss, Suggested Draining of, 348 

 Women in Munition Factories, Miss O. E. Monkhouse, 68 

 Wood, Artificial Seasoning of, 362 

 Wounds, Cicatrisation of. The Law of, J. Amar, 80 

 Wulsty Castle, The Machinery of S.S., 191 

 Wurtz, Gerhardt and. The Centenaries, of, Sir T. E. 



Thorpe, 165 



X-rav : Spectrometers and the Tungsten X-ray Spectrum, 

 Resolving Powers of, E. Dershem, 480 ; Tubes, New, 

 473 ; Unit, A Mobile, H. C. Head, 79 ; Work in 

 England. A. A. CampbelT Swinton, 512 



X-rays : Absorption of, E. A. Owen, 98 ; in Copper and 

 Aluminium, C. M. Williams, 279 ; Corpuscular Radia- 

 tion Produced by. The Asymmetrical Distribution of, 

 E. A. Owen. 70 : Protection against, A Biological 

 Basis for, C. R. C. Lyster and Dr. S. Russ, 70 



Yale University: Bequest to, by J. W. Sterling, 419, 519; 

 Gifts to, by Mrs. J. H. Williams and W. L. Harkness, 

 439 

 Yana Group of Indians in North-eastern California^ His- 

 tory of the, T. T. Watermanj 330 

 Yorkshire Type Ammonites, Edited by S. S. Buckman, 364 

 Young Observer's Handbook, The, W. P. Westell, 263 

 Yunnan, Results of an Expedition to, R. C. Andrews, 29 



Zinc : -blendes, Magnetic Susceptibilities of, 373 ; Ore Re- 

 sources of the Empire, The, S. J. Johnstone'and others, 

 226 



Zirconium Nitride, P. Bruire and E. Chauvenet, 498 



Zirconyl : Nitrate, The Neutral, Ed. Chauvenet and Mile. 

 L. Nicolle, 259 ; Sulphate, Neutral, Combinations of, 

 with some Alkaline Sulphates, C. Chauvenet and Mile. 

 H. Gueylard, 400 



Zoological Results of a Tour in the Far East, Dr. N. 

 Annandale ; Dr. T. Kaburaki, 21^9 



Zoology, The Value of, Prof. M. F" Guyer ; Prof. H. B. 

 Torrey, 371 



Zygopteridean Leaf, The Branching of the, B. Sahni, 200 



MWFORD STREET, S.E, 1, AND BUNG/ 



