By the provisions of the will of the late Dr. William Johnson Walker two 
prizes are annually offered by the Bosron Soctrry on NATURAL History for 
the best memoirs written in the English language on subjects proposed by a 
committee appointed by the Council. 
For the best memoir presented a prize of sixty dollars may be awarded ; 
if, however, the memoir be one of marked merit, the amount may be increased 
to one hundred dollars, at the discretion of the committee. 
For the next best memoir, a prize not exceeding fifty dollars may be 
| awarded. 
-Prizes will not be awarded unless the memoirs presented are of adequate 
merit. 
The competition for these prizes is not restricted, but is open to all. 
1. In all eases the memoirs are to be based on a considerable body of orig- 
inal and unpublished work, accompanied by a general review of the literature 
of the subject. 
2. Anything in the memoir which shall furnish proof of the identity of 
the author shall be considered as debarring the essay from competition. 
3. Each memoir must be accompanied by a sealed envelope enclosing the 
- — author’s name and superscribed with a motto corresponding to one borne by the 
ie manuscript, and must be in the hands of the Secretary on or before April 1st 
| of the year for which the prize is offered. 
| < Supsects ror 1896 :— 
(1) A study of an area of schistose or foliated rocks in the eastern United 
ates. 
2) A study of the development of river valleys in some considerable area - 
of folded or faulted Appalachian structure in Pennsylvania, Virginia, or Ten- 
 nessee, 
3B) hn: experimental study of the effects of close-fertilization in the case 
ae of some plant of short cycle. | 
} (4) Contributions to our baovlaigs of the general morphology or the gen- ~ 
Bea: eral physiology of any animal, except man. 
s Snsects FOR 1897: — 
S 1) A study of glacial, fluviatile, or incision pues dsaociated with 
2 the closing stages of the glacial period. 
(2) Original investigations in regard to the chalazal impregnation of any 
North American species of Angiosperms. 
- - (3) An experimental investigation in cytology. 
Psa A contribution to our knowledge: of the > Feeepholcigy of the Bacteria. 
SAMUEL HENSHAW, 
Secr etary. 
Boston F Hoey of Natural History, | 
Eee ‘pice ie Weck 
