296 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Walker Prizes. 
The subjects selected by the Walker Prize Committee for the 
annual award were : — 
(1) . A cytological study of the sexual reproduction in Mucora- 
ceae or Peronosporaceae. 
(2) . A contribution to our knowledge of color-vision, especially 
the evolution of color-vision. 
(3) . A contribution to our knowledge of cell-division. 
(4) . A study of the chemical and physical relations of any group 
of closely related mineral species. 
(5) . A geological study (including the mineralogy and economic 
geology) of any mineral deposit in the United States. 
These subjects have proved unsuccessful in bringing forth an 
essav. 
The Committee have not reported the subjects for the award in 
May, 1899. 
The fifth award of the Grand Honorary Walker Prize was made 
by the Council, at their meeting, April 20, to Mr. Samuel H. Scudder 
of Cambridge for his contributions to entomology. According to 
the Walker foundation the Grand Honorary Prize 4 ‘ shall not be 
awarded oftener than once in five years; ” it may be five hundred 
or one thousand dollars. In the award to Mr. Scudder, as in all 
previous awards, the Council voted the maximum sum, one thous¬ 
and dollars. In acknowledging the award of the Council Mr. 
Scudder writes: — 
( Copy.) 
Cambridge, April 25, J 98. 
Mr. Samuel Ilenshaw, 
Secretary, Boston Soc’y of Natural History, 
My dear sir, — 
I am in receipt of your esteemed favor of the 22d announcing 
that the Council of the Society has awarded me the Grand Honorary 
Walker Prize. I beg you will express to the Council my sincere 
thanks for this most unlooked for distinction. Having been Secre¬ 
tary of the Society at the foundation of the Prize Fund and the 
intermediary of its first announcement to the scientific public, I am 
