612 



INDEX 



-Observations on finishing tempera- 

 ture and properties of rails. 353. 



-The emissivity of metals and o.x- 

 ides, II: Measurement with the 

 micropyrometer. 566. 



-A thermoelectric method for the 



determination of the purity of 

 platinum ware. 282. 



Burns, K. Astronomical photog- 

 raphy and the Schumann region. 

 333. 



Burrows, Charles W. An experi- 

 mental study of the Koepsel per- 

 meameter. 491. 



Butler, B. S. *Geology and ore de- 

 posits of the San Francisco and 

 adjacent districts, Utah. 222. 



Cain, J. R. The determination of 

 carbon in steels and irons by direct 

 combustion in oxygen at high tem- 

 peratures. 393. 



Calkins, F. C. *Geology and ore- 

 deposits of the Phillipsburg quad- 

 rangle, Montana. 163. 



Calvert, W. R. *Geology of the 

 Standing Rock and Cheyenne Riv- 

 er Indian reservation, North and 

 South Dakota. 423. 



Cameron, F. K. Potash from kelp. 

 168. 



Campbell, M. R. The probable mode 

 of origin of the Lewis over thrust. 

 298. 



Capps, S. R. Some ellipsoidal lavas 

 on Prince William Sound, Alaska. . 

 169. 



Carpenter, Everett. *Ground water 

 in Boxelder and Tooele Counties, 

 Utah. 199. 



Chestnut, V. K. Berkeleyan days. 35. 



Clark, Austin Hobart. Circulation 

 of the abvssal water of the oceans. 



-The correlation between the bathy 

 metrical and the geographical range 

 in the recent crinoids. 558. 



-Nocturnal animals. 139. 



*Notes on some speciments of a 



species of onychophore {Oroperi- 

 patus corradoi) new to the fauna of 

 Panama. 291. 



*Sopra una piccola di Onychophora 



da Australia. 75. 



The relation between recent crin- 

 oids and the temperature of their 

 habitat. 579. 



^*Une etude philosophique de la 



relation entre les crinoides actuels 

 et la temperature de leur habitat. 

 609. 



*Two interesting mammals from 



the island of Tobago, West Indies. 

 74. 



Clark, W. Blair. A laboratory rou- 

 tine auxiliary to sugar beet breed- 

 ing. 234. 



Clark, William Mansfield. *The 

 characteristics of bacteria of the 

 colon type found in bovine feces. 

 486. 



The colon group of bacteria. 373. 



Clarke, F. W. *The composition of 

 crinoid skeletons. 419. 



The relative abundance of several 



metallic elements. 58. 



*Water analyses. 606. 



*Constitution of natural silicates. 



607. 



Cleaves, H. E. The determination 

 of carbon in steels and irons by 

 direct combustion in oxygen at 

 high temperatures. 393. 



CoBLENTZ, W. W. Exhibition of ex- 

 treme forms of thermopiles. 126. 



Measurements on standards of ra- 

 diation in absolute value. 565. 



A comparison of stellar radiometers , 



and radiometric measurements on 

 stars. 588. 



The exudition of ice from plants. 



206. 



Various modifications of thermo- 

 piles having a continuous absorb- 

 ing surface. 511. 



Abstracts. 



