in Natural History. 
" By the provisions of the will of the late Dr. William Johnson Walker 
two prizes are annually offered by the Bosron Sociery or NATURAL HISTORY 
dor vu best memoirs written in cce English language on subjects proposed by a 
ie the best memoir Daia a prize of sixty dollas may be awarded ; if, © 
i wever, the memoir be one o spice merit, ais amount may be increased to 
ete: 
Prizes will not be awarded unless the memoirs presented are of adequate 
