rpo 



Original Papers 



Page 

 Electricity. — Quantitative experiments with the audion. L. W. Austin.. . 81 

 Paleobotany. — Notes on two conifers from the Pleistocene Rancho La Brea 



asphalt deposits, near Los Angeles, California. F. H. Knowlton 85 



Ethnobotany. — Quichua names of sweet potatoes. O. F. Cook 



Abstracts 



Chemistry 91 



Geology 92 



Re FEB 



96 



Tech no 1 ! i 98 



Engi i 98 



Proceedings 



The Botanical Society . . 99 



The Biological Society 104 



