INJECTION MASSES. 



139 



In this figure (Fig. 37) of the regular brass anatomical syringe, are shown four canulae 

 of various sizes and a separable stop-cock. The stop-cock fits upon the end of the short 



COOMAN & SHURTLEFF, 

 BOSTON. 



FIG. 37. BRASS SYRINGE ; x .5. 



canula of the syringe, and the canulse for insertion in the vessels fit upon the end of the 

 stop-cock. In most syringes of this kind the stop-cock may be dispensed with and the 

 canulae fitted directly to the syringe if desired. 



INJECTION MASSES. 



341. Plaster of Paris Mass. The most convenient mass is 

 composed of the finest plaster of Paris stained with carmine solu- 

 tion for arteries and with Berlin 

 blue for veins. To facilitate the 

 preparation of the mass, a quan- 

 tity of both colors should be kept 

 in stock. 



FIG. 38. SMALL BRASS SYRINGE 

 REMOVABLE STOP-COCK AND 

 FOR FINE INJECTIONS ; x .3. 



WITH 



342. Carmine Solution. 

 This is prepared by grinding to a 

 paste 4-5 grams of carmine No. 

 40 in 20 cc. of water and then 



dissolving it in 50 cc. of strong ammonia. To this solution is then 

 added 75 cc. of glycerin and 500 cc. of water. After shaking well, 

 filter through fine flannel or absorbent cotton. 



343. Blue. Berlin blue ( 1449), a saturated aqueous solution, 

 500 cc., glycerin, 75 cc. Mix the glycerin and the blue, and filter 

 as for red. The glycerin preserves the solutions and retards the 

 setting of the plaster (G-age, 1, 717). 



344. Various Colors A. Red. Plaster mass may be well 

 colored by American or Chinese vermilion, red lead or a solution of 

 aniline red (magenta) : Magenta, 2.5 grams ; 50 per cent, alcohol, 

 100 cc. 



