CONTENTS 



Original Papers 



Page 

 Geophysics. — A theory of terrestrial volcanoes and the geography of the 

 moon. Stanislas Meunier 637 



Physical Chemistry. — Thermoelectric measurement of the critical ranges of 

 pure iron. George K. Burgess and H. Scott 650 



Botany. — Severinia buxifolia, a Citrus relative native to southern China. 

 Walter T. Swingle 651 



Botany. — Moreh oak, a new name for Quercus morehus Kellogg. W. H. 

 Lamb 657 



Ceramics. — The constitution and microstructure of porcelain. A. A. Klein. 658 



Abstracts 



Terrestrial Magnetism 661 



Geology .662 



Technology 664 



