

CONTENTS 



Original Papers 



Page 



Mathematics.— Note on multiple algebra: The reduction of real dyadics 

 and the classification of real homogeneous strains. Edwin Bidwell 

 Wilson -. . 173 



Mineralogy,— Halloysite from Colorado. Esper S. Larsen and Edgar T. 

 Wherry . 178 



Ornithology. — Diagnosis of a new laniine family of Passeriformes. Harry 

 C. Oberholser 180 



Anthropology, — Remarks on terms of relationship. Truman Michelson.. 181 



Abstbacts 



Geology. . , • 185 



Phytopathology 187 



Pboceedinqs 



The Philosophical Society of Washington 189 



The Geological Society of Washington 193 



The Botanical Society of Washington 199 



The Biological Society of Washington 201 



The Anthropological Society of Washington. 202 



