Walker Prizes in Natural History 
B* THE provisions of the will of the late Dr. William Johnson Walker two prizes are annually 
offered by the Boston Society or Naturat 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 dis- 
cretion 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. It is nevertheless the tradi- 
tion of the Society that the founder of these prizes intended them more in the nature of encourage- 
ment to younger naturalists than as rewards for the work of mature investigators. 
Attention is especially called to the following points:— 
1. Inall cases the memoirs are to be based on a considerable body of original and unpub- 
lished 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. Although the awards will be based on their intrinsic merits, preference may be given to 
memoirs bearing evidence of haying been prepared with special reference to competition for these prizes. 
4. 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 manuscript, and must be in the hands 
of the Secretary on or before March 1st of the year for which the prize is offered. 
(@=" (Note the change of date for receipt of manuscripts—now March ist.) 
s. The Society assumes no responsibility for publication of manuscripts submitted, and pub- 
lication should not be made before the Annual Meeting of the Society in May. 
SUBJECT FOR 1921 AND 1922: 
Any subject in the field of Natural History 
BOSTON SOCIETY OF NATURAL HISTORY 
GLOVER M. ALLEN, Secretary BOSTON, MASS., U.S.A. 
The Geology of Vancouver and Vicinity 
By EDWARD M. J. BURWASH 
14 half-tones, 10 line drawings, and 2 colored maps 
A thorough and authoritative survey of the region, made 
more interesting by the remarkable photographs, which 
include a profile of the Grouse Mountain spur, the Lions 
from Mount Brunswick, a view of Red Mountain from Black 
Tusk Mountain, Mount Garibaldi from the south, a glacial 
section from a cutting on Keith Road, and others equally inter- 
esting. One colored map. shows the topography of Vancouver 
range and the other is a geological map of Vancouver and 
vicinity. 
112 pages, paper covers; $1.50, postpaid $1.60 
THE UNIVERSITY OF CHICAGO PRESS 
CHICAGO : - - : - ILLINOIS 
