CONTENTS 

 Original Papbrs 



Page 



Paleontology. — Significance of divergence of the first digit in the primitive 

 mammalian foot. James Williams GidlEY 273 



Interferometry. — The use of the interferometer in the measurement of small 

 dilatations or differential dilatations. C. G. Peters 281 



Abstracts 



Botany 285 



Economics 285 



Technology 286 



Proceedings 



Biological Society 287 



Geological Society 288 



Scientific Notes and News 299 



