

CONTENTS 



Original Papers 



Page 



Terrestrial Magnetism. — Preliminary results of a first analysis of the sun's 



general magnetic field. L. A. Bauer 513 



Radiotelegraphy. — Further comparison of arc and spark radio transmission. 

 L. W. Austin 517 



Abstracts 



Geophysics 520 



Physics •• 521 



Chemistry 522 



Physical Chemistry 522 



Mineralogy 523 



Petrology 524 



Geology 526 



Palaentology 530 



Botany 532 



Zoology 533 



Technology 533 



References 



Hydrology 535 



Technology .' 535 



Proceedings 



The Philosophical Society of Washington 536 



The Geological Society of Washington 538 



Announcement op Meetings 



Chemical Society of Washington 540 



Inde.v 541 



