INTRAVENOUS INJECTION OF GUINEA-PIGS 



251 



the dorsal aspect of the right hmd leg mto view (fig. 2). After 

 clipping the hair from the leg and shaving it, the leg is lifted up 

 slightly by the first, or first and second fingers and lightly com- 

 pressed by the thumb of the left hand, A small incision, usually 

 about I inch long is made diagonally across the leg from the 



Fig. 2 



outer, lower to the upper and inner aspect (fig. 3). The sub- 

 cutaneous tissue is then pushed aside with a fine pointed forceps 

 thereby permitting the vessel to come into view. The vessel 

 when dilated by suitable compression permits the ready entrance 

 of a number 23 B. & S. gauge needle, although a number 26 

 B. & S., f inch needle is usually employed. The needle is always 



