68 Sir EvERARD Home on the structure, &c. 



EXPLANATION OF PLATE IL 



It represents muscular fibres magnified in different 

 degrees. 



Fig. 1. A fasciculus of fibres taken from the bullock's neck, 

 sufficiently dissected to show the separate fibres ; magnified 

 loo diameters. 



Fig. 2. A portion of the same fasciculus, the fibres more 

 unravelled ; magnified 200 diameters. 



Fig. 3. A portion of a fibre in its contracted state, con- 

 sisting of five blood globules, and exactly one inch in length, 

 taken from the bullock's neck ; magnified 400 diameters. 



Fig. 4. The same length of fibre extended to its utmost, 

 without giving way ; magnified 400 diameters. 



The calf was selected for this last purpose, the elastic 

 medium between the globules being less brittle in the young 

 than the full grown animal. 



