676 



INDEX. 



V 



Van Horn, F. R., bournonite crys- 

 tals from Utah, 145. 



Volcanic tuffs, characters, Pirsson, 

 191. 



Volcano of Mauna Loa, Hawaii, Jag- 

 gar, 621. 



von Engeln, O. D., studies on ice 

 structure, 449. 



Vult6, H., Household Chemistry, 659. 



W 



West Australia geol. survey, 316. 

 — Physiographic geology, Jutson, 317. 

 West Virginia geol. survey, 218. 

 Williston, S. H., Water Reptiles, 



217. 

 Wireless, Book of, Collins, 518. 

 Wisconsin geol. survey, 218. 

 Wiilfing,, Symmetry Classes, 91. 



Wyoming, Mammals and horned 

 dinosaurs of Lance formation, Lull, 

 319. 



X 



X-ray hand spectra, Wagner, 80. 



Yukon-Alaska International bound- 

 ary, Cairnes, 522. 



Ziegel, H., Metallurgical Analysis, 

 516. 



ZOOLOGY. 



British Museum Catalogues, 96, 669. 

 Crinoids, recent, Clark, 60, 67. 

 Reptiles, Water, Williston, 217. 



See GEOLOGY. 



TEN-VOLUME INDEX. 1911-1915. 



The Index to volumes XXXI-XL, to be ready for distribution about Jan- 

 uary 1, 1916, completes the present volume. It will be sent only when 

 specially ordered. Price ONE DOLLAR. 



