UNITED STATES DEPARTMENT OF AGRICULTURE 
BUREAU OF BIOLOGICAL SURVEY 
WASHINGTON, D. C; 
ADDRESS REPLY TO 
CHIEF, BUREAU OF BIOLOGICAL SURVEY, 
AND REFER TO 
Llay 14,- 1918. 
Ur. Alex. Wet.nore, 
Assistant Biologist, 
Bureau of Biological Burvey. 
Dear Ur. Y/etmore: 
In accordance with letter of authorization Ko. 437-Bi. you will 
proceed on or about Uay 18, 1918, to Can Antonio, Texas, for the pur- 
pose of investigating roosts that have been erected for bats near that 
city. You should get in touch with Dr. C. a. ii. Oarapbell of Can Antonio, 
who has been active in erecting these roosts, and secure as much infor- 
mation from him as possible. In addition you should visit the roosts, 
examine them, photograph them if possible, collect samT)les of guano, and 
if opportunity oi'fers, secure sixjcimens of the bat iiihabiting them, and 
gather any other information t^t may seem jpertinent. This vjot'k should 
require not more than one or two days. 
On completing tliis investigation you will continue, under letter 
of authorization Ko. 438-Bi., to Lake Burford (Stinking Xiake) in the Ji- 
carilla Indian resei’vation, Kew ilexico, 2 md there maice a detailed study 
of the v/aterfowl toid other Y)irds breeding at that lake, '^ou should as- 
certain the Bijecies found there, and the approximate numbers of breeding 
birds of each kind. In {iddition you should make note of any infonnation 
that will indicate the cover available for these birds as nesting sites, 
their food supplies, natural enemies, and other conditions affecting 
tliem. In carrying on this v;ork you will have many ox^x-'Ortunities for mak- 
