D 
UNITED STATES DEPARTMENT OF AGRICULTURE, 
BUREAU OF BIOLOGICAL SURVEY, 
WASHINGTON, D, C. 
cone 3, 1915. 
Mr. ill ex 7/etmore, 
Corinne, Utah. 
Dear Lr. Wetmore: 
M 
1 have your letter of Hay 30. I aslcea Doctor Cobb as to just 
how he wished the samples of sediment from Salt Lake to be preserved, 
and he told me that if shipped within a reasonable time after col- 
lection, he thought no specific preservation was necessary and sug- 
gested trying the experiment without a preservative. I must say that 
I doubt materially if nematodes will be found in water so strongly 
saline as that of Salt Laice. I have never collected the brine shrimp 
myself , but it is said to occur in water impregnated with salt to al- 
most any extent, 
1 am glad you are having- the opportunity of studying and making 
notes on the behavior of water birds during the mating jjcriod, £3 we 
know very littl bout the subject. 1 hope you neglect no opportunity 
to get notes as tc the tine when the several species of waterfowl begin 
mating and nesting. Any snapshots you may be able to tale showing the 
antics of the breeding birds will be very valuable. 
Very truly yours. 
T P'V 
