DISEASES OF GROUSE 127 



probably fulfil the function of second host 

 of the tapeworm found in the interior of 

 the bird, though this has not yet been 

 definitely ascertained. In the words of 

 Dr. Shipley, " Grouse, like other animals, 

 have a considerable fauna livingboth in and 

 on them." He tells us that "The scientific 

 members of the inquiry have recorded 

 eight different species of insect or mite liv- 

 ing either amongst the feathers or on the 

 skin of the bird, or in other ways associated 

 closely with the grouse, and no fewer than 

 fifteen animal parasites living in the 

 alimentary canal, the lungs, or other 

 organs." Some of these are, however, he 

 says, negligible, either existing in too 

 small numbers to be deadly, or infesting 

 only a small percentage of birds ; while 

 others have been found in about 95 per 

 cent of the cases investigated. 



It is more than probable that minutely 

 technical or scientific descriptions of the 

 appearance, functions, and effects of the 

 multitudinous species of parasites by 

 which the grouse is infested and often 



