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CONTENTS 

 Original Papers 



Page 



Petrology. — Microscopic examination of clays. R. E. Somers 113 



Crystallography. — An unusual sulphur crystal. F. RussELL Bichowsky. ... 126 



Mineralogy. — Plancheite and shattuckite, copper silicates, are not the same 

 mineral. Wai,demar T. Schaller .' iji 



Paleontology. — Description of a supposed new fossil species of maize from 

 Peru. F. H. KInowlton 134 



Zoology. — The systematic position of the crinoid genus Holopus. AusTUf 

 H. Clark 136 



Anthropology. — ^A second archeological note. Truman MichELSON 138 



Abstracts 



Inorganic Chemistry 139 



Entomology 139 



Proceedings 



Philosophical Society 140 



Botanical Society ^ 143 



Entomological Society 148 



Scientific Notes and News 151 



