104 ANATOMICAL TECBNOLOGY. 



should "bear a label giving tlie above general data, and also the 

 name of the part. This is imperatively necessary with the verte- 

 brse, the ribs, and the phalanges ; hence each must be carefully 

 labeled as it is separated from the rest of the body. 



E. If the methods of maceration or heating with liquid soap are 

 employed, parts like the pelvis and soapulse, and limb bones, 

 exclusive of the manus and pes, which cannot be mistaken, may be 

 put together and labeled as for the whole animal. Parts that might 

 be difficult to distinguish should be kept in separate dishes, and 

 each properly labeled. The vertebrae might be divided into the 

 four sets — cervical, thoracic, lumbar, and sacral ; each set should 

 then be connected by attaching a Manilla hemp string to a wire and 

 passing it through the neural canal and tying the ends. The order 

 of the bones cannot then be changed as they separate in the macer- 

 ating process. 



The caudal vertebrae that have no neural canal must be num- 

 bered or put in separate dishes or vials and properly labeled. 



The ribs of one side at least should be removed one by one, and 

 tied in order on a string, or put into separate dishes. 



Never put bones of different animals in the same dish, unless they differ so greatly in 

 size or conformation that confusion would be impossible. 



F. The humerus, femur , tibia, and radius should be drilled at 

 or near their ends, so that the oily matter in the medullary canal 

 may be removed. The tibia and radius may be drilled in the artic- 

 ular surfaces, care being taken to reach the center of the thickness 

 of each bone. The distal end of the femur may be drilled, but the 

 proximal hole should be made on the ventral side, between the tro- 

 chanter and the articular head. With the humerus, the proximal 

 hole may be made in the articular surface, about midway between 

 the base of the trochiter and the trochin, but cephalad of the slight 

 extension of the Canalis hicipitalis. The distal hole may be drilled 

 half way through the diaphysis, from a point on the cephalic aspect, 

 at the junction of the third and fourth quarters. 



After the holes are made, the medullary matter may be broken 

 up with a wire, and most of it expelled by syringing, first with 

 warm water and afterward with liquid soap, or spirits of turpentine, 

 or ether. The syringing should be repeated at the close of what- 

 ever process is adopted for removing the flesh. 



With most laijger animals, and with some smaller ones, it may 

 be desirable to drill the ulna and fibula also. 



