INDEX 



675 



HosTETTER, J. C. Dissociation of cal- 

 cium carbonate below 500°C. 563. 



— — -*Method for determining mag- 

 nesium in calcium salts. 91. 



— — -Reduction of iron oxides by plati- 

 num, with a note on the magnetic 

 susceptibility of iron-bearing plat- 

 inum, 293. 



Vacuum furnace for the measure- 

 ment of small dissociation pres- 

 sures. 277. 



Howard, L. O. Some observations on 

 mosquitoes and house flies. 449. 



Hrdlicka, Ales. The evolution of 

 man. 653. 



Hubbard, W. S. Hydrolysis of sugar 

 solutions under pressure. 228. 



Hudson, C. S. Acetyl derivatives of 

 the sugars. 482. 



Humphreys, W. J. Changes of sea- 

 level due to changes of ocean vol- 

 ume. 445. 



*Frost protection. 177. 



Lightning discharges. 640. 



*The thunderstorm and its phe- 

 nomena. 243. 



Hunter, W. D. Insects and their 

 relation to disease. 554. 



Isaacs, A. Study of some recent 

 methods for the determination of 

 sulphur in rubber. 235. 



Jackson, H. H. T. Pelage variations 

 of American moles. 261. 



James, M. A conducting paint. 558. 



Johns, C. O. Syntheses of methyl- 

 and methylamino-purines. 228. 



Johnston, John. *Utilization of dif- 

 fusion processes in the prepara- 

 tion of pure substances. 90. 



Kearney, T. H. *Mutation in Egyp- 

 tian cotton. 97. 



Kellberg, I. N. Supposed allotropy 

 of copper. 657. 



Knopf, Adolph. *Gold-platinum-pal- 

 ladium lode in southern Nevada 

 370. 



Plumbojarosite and other basic 



lead-ferric sulphates from the Yel- 

 low Pine district, Nevada. 497. 



Lamb, D. S. The medicine and sur- 

 gery of the ancient Peruvians. 

 655. 



Lamb, W. H. *Value of the big tree 

 contest. 635. 



Lambert, W. D. An exact formula for 

 theoretical gravity at the Earth's 

 surface. 559. 



Landis, W. S. Fixation of atmos- 

 pheric nitrogen. 481. 



Larsen, Esper S. Nepheline basalt 

 in the Fort Hall Indian Reserva- 

 tion, Idaho. 463. 



Lee, Willis T. *Guidebook of the 

 Western United States. Part B, 

 the overland route. 580. 



*Reasons for regarding the Morri- 

 son as an introductory Cretaceous 

 formation. 606. 



Relation of Cretaceous formations 



to the Rocky Mountains. 29. 



Use of physiography in the study 



of Rocky Mountain stratigraphy. 

 29. 



Lefpingwell, E. de K. . Ground ice 

 wedges. The dominant form of 

 ground ice on the north shore of 

 Alaska. 186. 



Lewton, F. L. Australian Fugosias. 

 303. 



LiNDGREN, Waldemar. *Geology and 

 mineral deposits of the National 

 mining district, Nevada. 580. 



*0n the Republic mining district, 



Washington. 21. 



LiTTELL, F. B. The Washington-Paris 

 longitude by radio signals. 250. 



LoTKA, Alfred J. Efficiency as a 

 factor in organic evolution. 250. 



Efficiency as a factor in organic 



evolution. I, 360; II, 397. 



Loughlin, G. F. *Reconnaissance in 

 the Canyon Range, west-central 

 Utah. 19. 



•Abstracts. 



