GENERAL CONSIDERATIONS ON THE STRIPED MUSCLES. 241 



covcrinj; imi.srlos si oiild not be entirely excised, but ought to beciit Uiroiigii tlie middle, acroaa 

 tlioir fibreH, niui the ends thrown back ; in this way it is always pn>sil)le to rep'ace a muiscle 

 by bringing llie two portions together; the study of its relations is then much moreeuby. The 

 cellular tissue is got rid of by removing it with the forceps, and carrying the edge of the 

 scalpel in the re-entering angle lorniod by the cellular hiyer and the surface nf the uiusclo. 

 Thi.H mthol also suftict's for removing aponeuroses when they are slightly adherent to the 

 muscular fibres. But when tliey give attachment to these by their under face, as may be 

 noticed in the external scapular aponeurosis, it is necessary to have recourse to the method 

 indicated above To remove fat, glands, etc, .-cissors will be found very advantageous. 



Order to folloiv in preparing all the rnusc/cn of the sitiw subject, so as to derive most advantage 

 therefrom. 1. Place the subject in tlie first position, and commence by studying the muscles of 

 the inferior abdominal region. Then excise them, leaving the posterior extremity of the 

 deep pectoral muscle, the prepubic tendon, and the crural arch intact. The abdominal cavity 

 having been emptied of the viscera it contains, dissi ct and study eucceasively the diaphragm. 



Fig. 157. 



IIUI.SK FIXKD IN THK SECOND POSITION ON A WHEELED TABLE. 



the internal crural region — except the deep muscles — the sublumbar region, the femoral and 

 posterior crural regions, the superficial muscles of the inferior cervical region, and the pectoral 

 region. 



2. After detaching for future use one of the anterior limbs, the animal is placed in the second 

 position, and one after another may be dissected the muscles of the ear, those of the superior 

 cervical region, the croup and costal regions — except the triangularis sterni — and the spinal 

 region of tlie bark and loins. 



3. The regions of tiie anterior limb may be prepared at the same time, or immediately 

 afterwards. 



4. Separate the two posterior limbs by sawing the femurs through their middle, and proceed 

 to the dissection of the muscles of the posterior leg and foot. 



5. By means of another application of the saw across the middle of the loins, the pelvis is 

 comph tely isolated for tlie preparation of the coccygeal muscles, and the deep muscles of the 

 internal crural region, nearly as they are represented in figures .39 and 40. 



6. The animal being placed on its side, the pectoral cavity is opened by sawing through 

 the ribs near tlieir extremitit-s ; on the two particular portions thus obtained may be 

 studied, in one part, the triangularis sterni, and in the other the deep muscles of the inferior 



