CONTENTS 



Original Papers 



Page 



Mathematics. — Account of researches in the algebra of physics. III. A. 



Macfarlane 395 



Meteorology.— The dense haze of June 10-11, 1912. H. H. Kimball 402 



Physics. — A new reflection ocular. P. G. Nutting. 404 



Geology. — Fall of volcanic ash on Seward Peninsula, Alaska in 1907. Philip 



S. Smith 406 



Abstracts 

 Geology 408 



