MAMMALS 



11 



The preservative recommended as most satisfactory for the 

 skins of small mammals is a mixture of powdered arsenic (dry 

 white arsenic trioxide) and powdered alum (ammonium) in the 







Fig. 5. — Opening cut on abdomen in small mammals. 



Fig. 6. — Skinning out hind leg. 



proportion of half and half by volume. This mixture is especially 

 good where the climate is very hot and moist. Arsenic may be 

 used alone if alum is not available. The dry preservative mixture 



