4 



collected, and any information communicated which may serve to 

 determine the species. 



Skins of any divers or grebes in full spring plumage, of the 

 large black grouse, of the ptarmigan, or willow grouse (especially 

 in summer dress), of the different kinds of Canada or black-necked 

 geese, and of any waders in full breeding plumage, and in fact of 

 Arctic birds generally, will be very acceptable. 



The different species of Salmonidae, as salmon, trout, whitefish, 

 and grayling, are particularly desired by the Institution. In the 

 absence of alcohol, these may be skinned and dried. Fishes of 

 all kinds, however, will be much valued. 



Insects of all kinds will be highly prized, and, in fact, no object 

 of natural history, however abundant and familiar, will be without 

 its interest to the Institution. 



If suitable opportunities occur for the transmission of any re- 

 turns to these circulars, either of specimens or of observations, 

 they should be sent directly to the Smithsonian Institution, Wash- 

 ington, D. C. ; if not, they should be forwarded to the care of the 

 Governor of the Hon. Hudson's Bay Company. 



JOSEPH HENRY, 



Secretary S. I. 



Smithsonian Institution, Washington, April 20, 1860. 



