QH81 

 147 



Ingersoll 



57050 



Na ture's cal endaT. 



DAT 



J[ ulbrary Bur 



57050 



This BOOK may Se'kept out TWO WEEKS 

 ONLY, and is subject to a fine of P^W 

 CENTS a day thereafter. It is due on the 

 day indicated below: 



28Jun'50x 





