266. Diagram of u frog. 



f incision nri-essary in various oberv;itk 



FIG. 267. Diagram of tlie mus- 

 cles of the leg of a frog, interior 

 surfare. a, t.rireps iemoris ; h, 

 biceps feiuor.s; ?, semi-nieiuhra- 

 -i'ii -iliaciis ; < /, 



tendo a.-liillis ; /, gast.ro<.-nu- 

 n ins ; h, lifad ( ,f gastrocnemius ; 

 nnts (the muscle also 

 marked k in front of and partly 

 hiddi-n by the preceding is the 

 tibialis auticus); I, rectus iu'- 

 ternus ; m, glutieus ; it, pyri- 

 fonnis; r, coccyx ; y, ilium ; a', 

 vast.ns cxternus. 



PIG. 268. The nerve-7iiuscle 

 preparation. F, end of femur; 

 N.sciatir. nerve; I, tendo a.-liiilis: 

 >', attaelinient of .smaller lend.. a 

 of gastrocne.mius t,, fiMinir. 



