FORE-LIMB. 120 



C. 151. The remainder of the same muscle. Part of its deep 

 surface has been dissected away to show the arrangement 

 of the elastic tissue between the muscle bundles in sheets 



Fig. 5. 



The cut ends of the elastic bundles, represented black. 

 ^ nat. size. 



of variable thickness ; the stoutest of these, in which the 

 fibres are approximately parallel to the long axis of the 

 fasciculi, lie in the interspace where several fasciculi meet ; 

 they are connected by thinner sheets in which the fibres 

 take a course diagonal to the fasciculi. Towards the 

 distal end of the muscle the elastic sheets have a more 

 ribbon-like character and are inserted upon the inner 

 surface of the tendon. Upon the reverse aspect of the 

 specimen the superficial layer of elastic tissue is shown ; 

 halfway down the muscle it abruptly assumes the struc- 

 ture of an ordinary tendon. This great development of 

 elastic tissue in the flexor of the wrist is doubtless connected 

 with the weight of the animal, and probably both assists in 

 the elastic support of the normally over-extended foot and 

 diminishes the risk of rupture of the muscle or tendon 

 under the sudden strain thrown upon them during rapid 

 locomotion. Presented by Lord George Sanger, Es<j. 



C. 152. Right fore-foot of a Horse (Equus caballus), showing 

 the intrinsic muscles and tendon attachments. Owing to 

 the excessive reduction in the number of digits, the in- 

 trinsic muscles are few. Two luuibricals are present (in 



K 



