556 



REPORTS ON THE STATE OF SCIENCE. — 1916. 



O rH i-H 



d.a 





!2i ^ 





;o .-4 ^ 



« ftO cs == ft 



I I 



O " ffl S 





"5 ^ 



ft 



I I I 



I I I 



++ 



I 00 M >a 

 ^ o o o 



I I I 



Cv 03 OJ GN 



•^ ! ^H ^H (M 

 I O OO 



" I r-H rt ( 



0> 05 (N 



^ —I Ci 



o o© 



