CONTENTS 



Origin Aii Papers 



Page 



Petrology. — The position of the vibration plane of the polarizer in the 

 petrographic microscope. F. E. Wuight 641 



Entomology. — A new generic name for the screw-worm fly. Charles H. 

 T. TowNSENi) ; . . 644 



Abstracts 

 Geology 647 



Procredings 



The Botanical Society 649 



The Biological Society 652 



The Anthropological Society : 653 



