GEOLOGICAL SURVEY OF THE TERRITORIES. 737 



Note. — We would invite the special attention of the members of the 

 survey and other traveling and collecting parties to the preservation in 

 alcohol of the parasites of birds, mammals, snakes, lizards, and frogs. 

 Search for them in the brain, under the skin, and in the intestines, lungs, 

 and liver of all these animals. Also look for various bot-fly larvae under 

 the skin of the buffalo, deer, elk, squirrels, and all sorts of mammals. 



The beaver in Europe is tenanted by a singular flattened parasite, 

 somewhat flea-like, the discovery of which is to be looked for in this 

 country. Moreover, hair-worms (Gordius), and the intestinal worms of 

 the Indians are much desired. 



47 G S 



