INTRODUCTION 



Each student should be supplied with at least 

 one good scalpel, a pair of strong forceps, a pen- 

 cil, and a note-book. It is expected that the Labo- 

 ratory will furnish for general use such necessary 

 equipments as bone-forceps, bone-saws, weighted 

 hooks, and dissecting-boards. 



Animals can be kept indefinitely in good con- 

 dition for dissection by injecting the thoracic and 

 body cavities and the intestinal tract, by mouth 

 and anus with the following solution : * 



Formalin i part 



Carbolic acid i part 



Glycerin 2i parts 



Sodium chloride i part 



Water to make loo parts 



For convenience in studying the vascular system, 

 however, the blood-vessels should be injected with 

 some colored substance before placing in the pre- 

 serving fluid. For this purpose an ordinary starch 

 injection mass, prepared according to the follow- 

 ing formula, may be used : 



Dry starch (laundry) i vol. 



4 per cent, formalin .' ij vol. 



C Dry Color i vol. ") 



Color ■< Glycerin i vol. [• i vol. 



(. 4 per cent, formalin i vol. j 



Open the thoracic cavity and inject through the 



•Keiller, Philadelphia Medical Journal, December ag, 1900, p. 1248. 



