Chap. 28.1 tie -Plate -of Nerves. 297 



1, i, A confiderable nerve on each fide, which arifing 



by two roots, the one from the fecond and third, 

 and the other from the fourth of the lumbar 

 nerves, runs down firft under the great pfoas 

 mufcle, then by the fide of the pelvis to the up- 

 per part of the foramen .thyroideum, where it 

 divides into two branches, the anterior, 2, and the 

 pofterior, 3. 



2, The anterior, goes out immediately above the ob- 



turator mufcle by a fmus, in the upper part of 

 the foramen thyroideum. 



3, 3, 4, The pofterior, pafles through the fame finus, 



and, running immediately down between the two 

 obturators, gives a branch to the external i it goes, 

 out then by that external branch, 4. 

 5) The fciatic nerve. 



6, 6, The crural nerves* 



7, 7, Branches of the crural nerves, going to the in- 



ternal iliacs. 



8, 8, The external branches of the crural nerves, which 



running down the thighs, give branches to the 

 internal iliac mufcles, the mufculi recti of the 

 leg, the vafti interni, the cnjrei, and the vafti 

 extern i. 



9, 9, The internal branches of the crural nerves, which 



run down the thigh, and in their courfe give off 

 branches to the vafti interni. 



10, 10, The roots of the nerves. 

 n, u, The roots of the nerves. 



1 2, Here the internal branch of the right crural nerve, 

 emerging between the mufcles gracilis and farto- 

 rius, is cut off. 



1 3, The root of that branch. 



1-4, The internal branch of the left crural nerve 

 cut off. 



15, i$, Branches 



