IV. 

 THE PREPARATION OF A SKELETON. 



A part of a skeleton, the wing or the leg of a fowl, 

 makes a good specimen to mount. This exercise may be 

 postponed until later, and some of the material obtained 

 for the study of muscles be utilized. The skeleton of an 

 entire animal may be prepared if each scholar will take 

 one part. 



Materials. A leg or wing of a chicken or bones to be mounted. 

 Ammonium hydrate. Borax. 



Apparatus. Bunsen burner. Ring-stand. A piece of wire gauze 

 six inches square. Granite-ware stew-pan. Fine gimlet and wire 

 or cardboard, needle and thread. 



In preparing bones, only general directions can be given, 

 as the kind, size, and condition of the bones determine, to 

 a certain extent, the details. 



a. Much of the muscle and fat may first be removed 

 with scissors and scalpel. 



b. Place the bones and the remaining debris in water 

 and boil until the muscles fall readily from the bones. If 

 a small amount of ammonium hydrate or borax be added 

 to the water, the process will be facilitated. To remove 

 the marrow from a long bone, bore a hole in either end 

 and thoroughly wash out the marrow. 



c. Place in clean water and remove everything from the 



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