CONTENTS 

 Original Papbrs 



Page 



Mineralogy — Hausmannite in the Batesville district, Arkansas. H. D. MiSER 

 and J. G, Fairchiw) i 



B otany— A preliminary revision of the North American and West Indian avocados 

 (Persea spp.). S. F. Bi.akb 9 



AasTRAcrs 



' Physics '. 22 



Chemistry 22 



Entomology 22 



Volcanology 23 



Chemical Technology 25 



pROceerjiNGs 



Biological Society . . 26 



SciKNTiPic Notes and News 27 



