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B. S. 17147 - Mallard (male) dead with 
the lead poison. Died in spasm. Mouth 
of Bear River, Utah. 
September 14, 1916* 
db. 
B. S. 17148 - Stomach of mallard 
(male) dead from lead poison. The 
prove ntric ulus enormously dilated. 
Mouth of Bear River, Utah. 
September 14, 1916* 
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