UNITED STATES DEPARTMENT OF AGRICULTURE, 
BUREAU OF BIOLOGICAL SURVEY, 
WASHINGTON, D. C. 
I.Ir. Alex Y/etmore, 
Assistant Biologist, 
Washington, I). 
Bear 1'r. ./etmoro: 
v> • 
In accordance with Letter of Autncrization ho. 205-Bi. 
dated May G, 1915, you will proceed on or about May 10 to the 
Salt Loire valley where you will continue the investigations begun 
last season into tne nature and origin of the mortality which , as 
prevailed among the duck's of that region for several years. Be- 
cause of the advantages due to large area and diversified condi- 
tions, you will carry cn a large part of the work this year at 
the mouth of Bear Liver. You will, however, keep informed as to 
the progress of tne trouble in otner localities and will visit those 
localities as often as circumstances warrant. 
At the meuth of Bear Hivor, you will make observations of 
the progress of the trouble among the birds on the marshes and will 
carry on experiments in attempting to establish the cause of the 
mortality. It will be necessary for you to erect a small building. 
to cost approximately *150, to serve as a field laboratory. Ehi 
s 
structure will be placed upon land leased for that purpose from the 
Bear Liver Club Company. Eh is building should bo ae proximate 1" 
