ANIMAL MECHANICS. 



107 



Long Flexors of Toes. 



1. First toe, 30 percent. 



2. Second toe, .... 40 



3. Third toe, . . . 30 „ 



Total, . . 100 



1. Flexor dig. long., ^ 



2. Flexor hall, long.,) 



3. Friction, §c, 



Total, . . 



(g.) The Insectivores. I shall take the flexor tendons of the 

 foot of the common Hedgehog as the type of the Insecti- 

 vores. They belong to a degraded type, as the fl. hall. long. 

 and fl. dig. long, are fused into one muscle, and possess a com- 

 mon tendon distributed by slips to each of the five toes. 



Equal lengths of the common tendon and of the five slips 

 gave the following comparative results, counting the cross 

 section of the five tendons of the toes as 100 : — 



. 91 per cent. 

 • 9 



100 



Hedgehog {long flexor tendons of toes) . 



1 . Flexor hall, longus, ) Weight. 



™ 7 . 7 1-7? per cent. 0.0 1 oz. av. 



2. rlexordig. longus, > ' J r 



3. Friction, tyc, 25 ,, 



(h.) The Edentates. — The six-banded Armadillo, and three- 

 toed Sloth of South America, are the best living types of this 

 remarkable group of animals. 



