274 



ANATOMICAL TECHNOLOGY. 



709. Posture and Preparation. Place the cat dorsicumbent ; 

 fasten the arms and legs laterad with cords tied to the loops on the 

 edges of the tray (Fig. 76). Take the precautions for cleanliness 

 ( 199). When the examination is made in warm weather or is to 

 extend over several days, the arteries should be injected with alco- 

 hol as directed in 284. If the vascular system itself is to "be 



FIG. 76. LINES OF INCISION FOB EXPOSING THE THORACIC AND ABDOMINAL 



VISCERA ; x .25. 



studied in the same individual, both arteries and veins should be 

 injected with plaster ( 352, 362). 



If the thorax is not to be studied, open it ( 825), cut the praecava to allow the blood to 

 escape, and inject caudad through the postcava and the aorta thoracica. If the vessels are 

 to be studied on a separate specimen, the injection may be omitted. 



Keep all exposed parts moist with the 15 per cent, glycerin ( 171). 



