INDEX TO VOLUME I 



July 19 to December 19, 1911 



PROCEEDINGS, PROGRAMS AND ANNOUNCEMENTS OF THE 

 ACADEMY AND AFFILIATED SOCIETIES 



Washington Academy of Sciences. 

 Proceedings, 101-104 



Biological Society of Washington. 

 Proceedings, 291 



Botanical Society of Washington. 

 Proceedings, 274 



Columbia Historical Society. Proceed- 

 ings, 296 



Engineers Society of Washington. Pro- 

 gram and announcements, 275. 



Geological Society of Washington. 

 Proceedings, 44-48, 139-142, 293 



Philosophical Society of Washington. 

 Proceedings, 274, 296 ; Programs and 

 announcements, 210, 246. 274 



AUTHOR INDEX 



Agnew, P. G. A device for measuring 

 the torque of electrical instru- 

 ments, 82 



A study of the current transformer 



with particular reference to iron 

 loss, 53 



Allen, E. T. Studies in ore deposition 

 with special reference to the sul- 

 phides of iron, 170 



Allen, W. F. Notes on breeding sea- 

 son and young of Polyodon Spat- 

 hula, 280 



*Anderson, J. F. Abortive cases of 

 poliomyelitis; an experimental 

 demonstration of specific immune 

 bodies in their blood-serum, 99 



* Experimental measles in the mon- 

 key, 99 



* The period of infectivity of the 



blood of measles, 99 



*Anderson, R. Geology and oil re- 

 sources of the Coalinga district, 

 Cal., 130 



*Arnold, R. Geology and oil resources 

 of the Coalinga district, Cal., 130 



Atwood, W. W. Physiographic studies 

 on the south slope of the San Juan 

 mountains, Colo., 45 



Austin, L. W. Condenser losses at 

 high frequencies, 143 



High spark frequency in radio- 

 telegraphy, 5 



— —Notes from the U. S. Naval wire- 

 less telegraphic laboratory, 190 



A preliminary note on the resist- 

 ance of radio-telegraphic antennas, 

 9 



Quantitative experiments in long 



distance radio-telegraphy, 82 



Ships' antenna as Herztian oscilla- 

 tor, 275 



Ihe slipping contact rectifying 



detector, 8 



Ship's antenna as a Hertzian oscil- 

 lator, 275 



*Baldwin. A. L. Triangulation in 

 Cal., Pt. II, 76 



*Bancroft, Howland. Reconnais- 

 sance of the ore deposits of northern 

 Yuma County, Arizona, 184 



*Bartsch, P. Description of new 

 mollusks of the family vitrinelli- 

 dae from the west coast of Amer., 

 96 



* Refers to Abstracts. 



297 



ijJ/6 3 



