260 INJECTIONS. 



460. Carmine Colouring Mass (Traite, p. 33) . Rub up in a 

 mortar 3 grms. of carmine with a little water and enough 

 ammonia to dissolve the carmine. Add 50 grms. of glycerin, 

 and filter. 



Prepare 50 grms. of acid glycerin (containing 5 grms. of 

 acetic acid for every 50 grms. of glycerin), and add it by 

 degrees to the carmine-glycerin, until a slightly acid reaction 

 is obtained (as tested by very sensitive blue test-paper, moist- 

 ened and held over the mixture). 



One part of this mixture is to be added to 3 or 4 parts of 

 the gelatin injection vehicle (ante, Formula 458), or of the 

 glycerin-gelatin (No. 459), or glycerin-alcohol vehicle de- 

 scribed below (No. 502). 



461. Ferrocyanide of Copper Colouring Mass (ibid., p. 34). 

 Take 



(1) Ferrocyanide of potassium (concentrated 



solution) 20 c.c. 



Glycerin . . . . . 50 



(2) Sulphate of copper (concentrated solu- 



tion) 35 



Glycerin 50 



Mix (1) and (2) slowly, with agitation; at the moment of 

 injecting combine with 3 volumes of vehicle. 



462. Blue Colouring Mass (Prussian Blue) (Robin's modifica- 

 tion of Beale' s formula, ibid., p. 35). 



Take 



(A) Sulphocyanide of potassium (sol. sat.) 90 c.c. 

 Glycerin 50 



(B) Liquid perchloride of iron at 30 . 3 

 Glycerin 50 



Mix slowly and combine the mixture with 3 parts of vehicle. 

 It is well to add a few drops of HC1. 



463. Cadmium Colouring Mass (ibid., p. 36). 



Take- 

 Sulphate of cadmium (sol. sat.) . . 40 c.c. 

 Glycerin . . . . . . 50 



and 

 Sulphide of sodium (sol. sat.) . . 30 



Glycerin 50 



Mix with agitation and combine with 3 vols. of vehicle. 



