OUR DOMESTICATED ANIMALS. 51 



here drawn from a figure by Mosler, but much reduced, 

 the measles do not in such cases merely occupy the 

 surface of the organ, but extend throughout the entire 

 thickness of the muscular walls (Fig. 12). Many of 

 them never so much as develop a head, and of those 

 which do acquire this organ only a small proportion 

 display the four large suckers characteristic of the 

 perfect Gysticercus bonis. In certain examples I found 



Fig. 12. Heart of a Calf with Measles. 



only one, two, or three suckers developed, and in these 

 instances the suckers themselves were either imperfectly 

 formed, or showed indications of commencing degenera- 

 tion at a comparatively early period. 



This circumstance of the liability of measles to perish ; 

 and subsequently to degenerate into minute calcareous 

 particles, is most important, practically; and I am 

 happy to perceive that my early statements on this 

 score have not escaped the attention of the officer 



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