254 SYNOPSIS "OF VETERINARY 



FOR COLORING LIQUIDS. 



tinctura santalum rubrum — Tincture of Red Saunders 

 or Sandal Wood. — Imparts a ruby red color. 



tinctura curcumae (n. F.) — Gives a yellow color. 



indigo blue. — For a blue color (not desirable). 



caramel — Solution of burnt sugar. — Gives a deep, dark 

 red to a brown color, according to quantity used. 



Tinctura coccus — Tincture of the cochineal insect. — Imparts 

 a rich, ruby red color; darker, richer and more brilliant than 

 a solution of carmine (carmine is made from the cochineal in- 

 sect) . 



liquor carmini (n. f.) — A solution of carmine which gives 

 a pink to a bright red color according to the amount used, (one 

 or two drachms to the pint is enough). 



For coloring ointments and powders. 



carmine — For pink or red. 



powdered curcuma- — For yellow. 



bole Armenian — For pink. 



powdered glycyrrhizae — For yellowish or brown. 



charcoal — For black. 



Directions for making a staple solution of carmine : 



]jt Carmine, 3 ij. 



Aq. Amnion. Fort., 3 j. 



Glycerin, 3 iij. 



Aq. Dest. Qs. Ad., Oj. 



Rub the carmine up* in the ammonia, then add the water, 

 shake, then add the glycerin to preserve it. 



If it should start to decompose (get fcetid and merky) add a 

 little more Aq. Ammon. Fort and shake. 



For Making Tincture of Cochineal. — Powder the insects, 

 let them macerate (soak) for eight days, in the proportion of one 

 part to eight parts diluted alcohol. 



In prescribing coloring agents for colorless liquid mixtures 

 or solutions, should you not know the quantity necessary to im- 

 part the characteristic color of the agent used, it will be suffi- 

 cient to add as the last item in the prescription the name of the 

 coloring agent followed by the abbreviation qs., for example : 



