214 STUDIES IN INSECT LIFE, ETC. 



trophied. The muscular wall suffered from an 

 infiltration of fibrous tissue. The fat which 

 normally lies at the bases of the ridges in a 

 healthy grouse had disappeared, and the blood- 

 vessels showed thickenings of their walls. The 

 connective-tissue base of the ridges is greatly 

 increased, and the vessels and the villi were 

 dilated and probably increased in number. In 

 most places the connective tissue contained a 

 large number of cells probably inflammatory in 

 origin, and in some cases fibroid change was 

 taking place. The epithelium was proliferated 

 and thrown into folds. The lymphoid follicles 

 were indistinguishable. 



The general condition of a grouse suffering 

 from Strongylosis shows evidence of a chronic 

 inflammation of the alimentary canal leading 

 to fibrosis. The Trichostrongylus in some cases 

 penetrates to the deepest portions of the crypt. 

 The epithelium lining these depressions when 

 the round-worm is adjacent to the walls of the 

 intestine has greatly altered, and there is a 

 marked increase in the fibrous tissue at its base. 



In fact we have, as Dr. Cobbett and Dr. 

 Graham Smith, who have so ably worked out the 

 pathology of Strongylosis, and whose results have 



