INDEX 



617 



Larsen, Esper S. CeboUite, a new 

 mineral. 4S0. 



Melilite and other minerals from 



Gunnison County, Colorado. 473. 



Preliminary note on searlesite, a 



new mineral. 397. 



The Stratigraphic break below the 



Jurassic sandstone in southwestern 

 Colorado. 237. 



LeClerc, J. A. *Environmental in- 

 fluences on the physical and chemi- 

 cal characteristics of wheat. 119. 



Lee, Charles H. *An intensive study 

 of the water resources of a part 

 of Owens Valley, California. 198. 



Lee, R. E. The Guillaume appara- 

 tus for the distillation and rectifi- 

 cation of alcohol. 264. 



Lee, W. T. Use of physiography in 

 the study of Rocky Mountain 

 stratigraphy. 



Levene, p. a. The chemistry of the 

 nucleic acids. 13. 



Leverett, Frank. Problems of the 

 glacial geologist. 171. 



Lewis, A. B. Travels in the South 

 Seas and New Guinea. 337. 



Littlehales, G. W. Condensation 

 of the tables of the azimuth of 

 celestial bodies. 461. 



A special method of finding the 



Sumner line. 505. 



Lloyd, E. R. The Cannonball marine 

 member of the Lance formation. 

 172. 



Logan, K. H. *Electrolysis from elec- 

 tric railway currents and its pre- 

 vention. Experimental test on sys- 

 tem of insulated return feeders in 

 St. Louis. 202. 



Long, W. H. *Polyporus dryadeus, 

 a root parasite on the oak. 121. 



*Three undescribed heart-rots of 



hardwood trees, especially of oak. 

 123. 



An undescribed species of Gym- 



nosporangium, from Japan. 122. 



LoTKA, Alfred J. An objective stand- 

 ard of value derived from the prin- 

 ciple of evoluiion. I. 409. 



An objective standard of value 



derived from the principle of evolu- 

 tion. II. 447. 



An objective standard of value. 



Correction and addendum. 499. 



LouGHLiN, G. F. The oxidized zinc 

 ores of Leadville, Colorado. 382. 



Lyon, Marcus Ward, Jr. *Tree- 

 shrews, an account of the mam- 

 malian family Tupaiidae. 330. 



Maddren, A. G. Quarternary his- 

 tory of the Mount St. Elias Region, 

 Alaska. 10. 



Matson, George C. *Geology and 

 ground waters of Florida. 45S. 



Matthes, F. E. Concave exfoliation. 

 295. 



IMoraine Dome and the moraines of 



the Little Yosemite Valley. 295. 



McCoLLUM, Burton. *Electrolysis 

 from electric railway currents and 

 its prevention. Experimental test 

 on a system of insulated return 

 feeders in St. Louis. 202. 



*Surface insulation of pipes as a 



means of preventing damage bj' 

 electrolysis. 75. 



McDaniel, a. S. The silver voltam- 

 eter. Part IV. 52. 



McLane, J. W. *Indicator significance 

 of vegetation in Tooele Valley, 

 Utah. 228. 



McMurran, S. M. The anthracnose 

 of the, mango in Florida. 121. 



Mees, C. E. Kenneth. The physical 

 chemistry of photography. 264. 



Meinzer, O. E. *Geology and water 

 resources of Sulphur Spring Val- 

 ley, Arizona. 197. 



*Underground water resources of 



Iowa. 196. 



Melcher, a. F. Note on the change 

 of density of sulphur with rupture. 

 431. 



* Abstracts. 



