'30 Organs of the Animal Body : their Forms and Uses. 
This substance is known to the anatomist as muscle, and consists 
of fibres arranged in bundles of various forms and sizes, and is not 
a mere mass of meat, as it appears to be at the first glance. Fig. 18 
shows the neck and part of the trunk of a horse from which the 
hide and a good deal of fat and white fibre have been removed, 
so as to make the outlines of the separate masses of flesh (muscle) 
quite distinct. 
Fig. 18. — Superficial Muscles of the Neck, region of the Shoulder, and 
part of the Back (^Horse). The dark lines are the outlines of the 
separate muscles, which have distinctive names, according to their 
forms and uses. 
Uses of Muscle. — A good anatomist knows the form, size, and 
attachment of every one of the bundles of red fibres which form 
the flesh of the animal, but this knowledge is not to be expected 
of the farmer ; he, however, should know what is the chiefly 
