CONTENTS 



Original Papers 



Page 



Physics. — The constants of spectral radiation of a uniformly heated enclosure. 



W. W. Coblentz 177 



Phytopathology. — Envronment influences in the pathology of Solanum 



tuberosum. W. A. Orton . . . . : 180 



Zoology. — Web-spinning fly larvae in Guatemalan caves. O. F. Cook -; 190 



Abstracts 



Phytopathology 194 



Anthropology 196 



Medicine '. 196 



Proceedings 



Washington Academy of Sciences 197 



The Chemical Society , 197 



The Geological Society of Washington 19d 



Anthropological Society 206. 



