INTRAVENOUS ADMINISTRATION OF SALVARSAN 



251 



to make the veins more prominent; this can be further increased by having 

 the patient make a fist. 



3. The glass funnel filled with about 20 to 30 c.cm. of normal saline 

 solution is supported at about the level of the patient's head. The air 

 is forced out of the tubing. 



FIG. 29. Second stage in the intravenous injection of salvarsan. Funnel lowered, blood 

 flowing from vein into rubber tubing and can be seen in the glass-connection tube. 



4. The operator inserts the needle, from which the warm saline is 

 flowing, into one of the veins of the elbow (Fig. 28) ; care should be exer- 

 cised that the needle does not penetrate the posterior wall of the vein. 



