UNITED STATES DEPARTMENT OF AGRICULTURE 
BUREAU OF BIOLOGICAL SURVEY 
WASHINGTON, D. C. 
Augiffit 26, 1916. 
Mr* Alex Wetznore, 
Coriime, Utali* 
% dear Wetmore: 
The Spencer Lens Company now annotmoe that they will he able to 
replace the cotmting chamber of the Haemocytometer shortly* They say 
that they have had no trouble with other cases, so that when you return 
it to them, in compliance with their reqtest, you had better acconpany 
it with a note explaining just how it fails to satis^* The enclosed 
tag should be attached to the case when shipped* We enclose also a 
frank addressed to the Spencer Lens Oortpany* 
With best regards, I am, 
Yery truly yours, 
IA/, ^ 
Assistant Biologist* 
M-MW 
Enclosure 2667* 
