CONTENTS 



Original Papers 



Pace 



Physics. — The relation between color temperature, apparent temperature, 

 true temperature, and monochromatic emissivity of radiating ma- 

 terials. Paxil D. Foote 317 



Physics. — Luminosity and temperature of metals. Paul D. Foote 323 



Crystallography. ^-Crystals and crystal forces. F. E. Wright 326 



Mineralogy. — Xanthophyllite in crystalline limestone. Arthur S. Eakle 332 

 Botany. — Pamburus, a new genus related to Citrus, from India. Walter 



T. Swingle 335 



Ethnobotany. — Polynesian names of sweet potatoes. O. F. Cook and Rob- 

 ert Carter Cook "[ 339 



Physiology. — The basal energy requirement of man. Eugene F. DuBois. 347 



Abstracts 



Terrestrial Magnetism 358 



Physics 358 



Radiotelegraphy 350 



Geology 360 



Botany 360 



Proceedings 



The Philosophical Society 361 



The Biological Society 362 



