PROCEEDINGS 



OF THE 



American Philosopl!ii^al Society 



HELD AT PHILADELPHIA 



FOR PROMOTING USEFUL KNOWLEDGE 

 Vol. LVIII. 1919. No. 3. 



CONTENTS 



PAGE 



Recent Discoveries of Fossil Vertebrates in the West Indies and their 



Bearing on the Origin of the Antillean Fauna. By W. D.Matthew i6i 



The Relative Contribution of the Staple* Commodities to the National 



Food Consumption. By Raymond Pearl . . . . .182 



Self-Luminous Night Haze. By E. E. Barnard ..... 223 



Graphical Representation of Functions of the nth Degree. By Francis 



E. NiPHER ........ ... 236 



PHILADELPHIA 



THE AMERICAN PHILOSOPHICAL SOCIETY 



104 South Fifth Street 



1919 



