546 



INDEX 



Two varieties of calciovolborthite 



(?) from eastern Utah. 138. 



*Two varieties of calciovolbor- 

 thite (?) from eastern Utah. 503. 



HiNE, Thomas B. *Potassium am- 

 monotitanate. 335. 



Hitchcock, A. S. *Notes on the bot- 

 any of Trinidad. 266. 



Holmes, W. H. *Agricultural imple-_ 

 ments of the mound-builders. 304. 



*Scope and relationship of history 



and archaeology. 304. 



HosTETTER, J. C. The electrolytic re- 

 duction of iron for analysis. 429. 



*A method for the determination 



of magnesium in calcium salts. 522. 



*Densities at high temperatures. 



521. 



Hough,' Walter. *Savage mutila- 

 tions for decoration. 200. 



Howard, L. O. *Dangerfrom import- 

 ed plants and fruits, and govern- 

 ment efforts to avoid it. 121. 



Hrdlicka, Ales. *Results of a trip to 

 Peru; with remarks on anthropo- 

 logical problems. 479. 



Humphreys, W. J. *Factors in cli- 

 matic changes in the past. 299. 



*The 1912 excursion of the Ameri- 

 can Geographical Society. 47. 



*0n the physics of the atmosphere. 



333. 



Violent uprushes in cumulus 



clouds. 93. 



Volcanic dust as a factor in the pro- 

 duction of climatic changes. 365. 



Hunt, W. F. Triplite from eastern 

 Nevada. 286. 



*Potassium ammonomagnesate and 



potassium ammonoborate. 130. 



Johansen, Fritz. *Zoological results 

 of the Denmark expedition to 

 northeast Greenland. 268. 



Johnson, W. T., Jr. The destruction 

 of bacteria in milk by ultra-violet 

 rays. 160. 



Johnston, John R. *History and 

 cause of the coconut bud-rot. 26. 



Johnston, John. *Note on the tem- 

 perature in the deep boring at 

 Findlay, Ohio. 500. 



*0n the density of solid substances, 



with especial reference to perma- 

 nent changes produced by high 

 pressures. 113. 



*0n the effect of high pressures on 



the physical and chemical behavior 

 of solid substances. 165. 



*The general principles underlying 



metamorphic processes. 527. 



Kanolt, C. W. The melting points of 

 some refractory oxides. 315. 



Kearney, Thomas H. *Indicator 

 value of natural vegetation in the 

 Tooele Valley, Utah. 264. 



*The wilting coefficient for plants 



in alkali soils. 119. 



Kellerman, Karl F. Suggestions for 

 frost protection. 53. 



Kimball, H. H. The unusual atmos- 

 pheric haziness during the latter 

 part of 1912. 269. 



Kindle, E. M. *The Onondaga fauna 

 of the Allegheny Region. 403. 



Knopf, Adolf. *The Eagle River 

 region, southeastern Alaska. 258. 



*Ore deposits of the Helena min- 

 ing region, Montana. 529. 



Knowlton, F. H. *Effect of the 

 Arctic night on tropical or sub- 

 tropical vegetation. 3^0. 



*A paleobotanical study of the 



coal-bearing rocks of the Raton 

 Mesa region of Colorado and New 

 Mexico. 173. 



KoLSTER, F. A. *National and inter- 

 national regulation of radiocom- 

 munication. 299. 



Lamb, Wm. H. *The catalpa septum: 

 a factor in distinguishing hardy 

 catalpa. 294. 



' Abstracts. 



