INDEX 



615 



*The emissivity of straight and 



helical filaments of tungsten. 426. 



*The luminous radiation from a 



black body, and the mechanical 

 equivalent of light. 542. 



The photoelectric sensitivity of 



various substances. 525. 



*The reflecting power of tungsten 



and stellite. 561. 



fThe relative sensibility of the 



average eye to lights of different 

 colors. 17. 



*The relative sensibility of the 



average eye to light of different 

 colors, and some practical appli- 

 cations to radiation problems. 

 427. 



Cole, F. C. fThe pagan tribes of the 

 Philippines. 273. 



Colley, R. H. -(Technique for the 

 study of the white pine blister 

 rust. 314. 



Collier, A. J. fAge of the high 

 gravels of the Northern Great 

 Plains. 194. 



Collins, G. N. fBehavior of maize 

 hybrids. 83. 



Condit, D. D. *Gypsum in the 

 southern part of the Bighorn 

 Mountains, Wyoming. 78. 



*Relations of the Embar and 



Chugwater formations in central 

 Wyoming. 162. 



Cook, F. C. *Experiments during 

 1915 in the destruction of fly 

 larvae in horse manure. 161. 



*Experiments in the destruction 



of fly larvae in horse manure. 161. 



Cook, O. F. fBehavior of cotton 

 hybrids. 84. 



Seedling morphology in palms and 



grasses. 420. 



The Mascarene cabbage palm as a 



new genus. 121. 



Coville, F. V. fHumus as a factor 

 in plant distribution. 436. 



fThe influence of cold in stimu- 

 lating the growth of plants. 394. 



fThe origin and use of upland 



peat. 117. 



Cowie, G. D. *Precise leveling from 

 Reno to Las Vegas, Nevada, and 

 from Tonopah Junction, Nevada, 

 to Laws, California. 132. 



Crittenden, E. C. *An average eye for 

 heterochromatic photometry. 264. 



Dall, W. H. fThe origin and early 

 days of the Philosophical Society 

 of Washington. 475. 



Darton, N. H. *A comparison of 

 Paleozoic sections in southern 

 New Mexico. 564. 



Daudt, H. W. flnvestigations of the 

 Kjeldahl method of determining 

 nitrogen. 112. 



Day, A. L. fCooling of a lava surface. 

 194. 



Dean H. J. *Surface waters of Mas- 

 sachusetts. 136. 



Dewey, L. H. fNeed for textile plant 

 fibers. 591. 



Diller, J. S. fMore evidence as to 

 the high temperature of the late 

 eruption at Lassen Peak. 193. 



fWas the new lava from Lassen 



Peak viscous at the time of its 

 eruption? 82. 



Dorsey, N. E. Luminescence meas- 

 urements. 1. 



Dufrenoy, J. A new case of meta- 

 phanic variation in grasses and its 

 significance. 535. 



Eakin, H. M. fThe Quaternary his- 

 tory of central Alaska. 81. 



Edwards, J. D. *A specific gravity 

 balance for gases. 160. 



*The effusion method of determin- 

 ing gas density. 428. 



fThe rapid determination of gas 



density. 475. 



Elvove, Elias. fThe separation and 

 determination of small amounts of 

 antimony. 114. 



Emerson, W. B. *Glasses for pro- 

 tecting the eyes from injurious 

 radiations. 268. 



