THE PREPARATION OF ANIMAL TISSUES. 65 



Mix slowly, and combine the mixture with three 

 parts of a glycerine-gelatine injection mass made 

 as follows (Robin's formula) : 



Dissolve, in a water bath, 50 grammes of French 

 gelatine (gold label) in 300 grammes of distilled 

 water in which some arsenious acid has been dis- 

 solved ; add 150 grammes of glycerine and a few 

 drops of carbolic acid. 



SCHEELE'S G-REEN INJECTION MASS (Robin's formula). 



Take of Arseniate of Potash (saturated solution), 80 c.c. 

 Glycerine, 50 c.c. 



and of 



Sulphate of Copper (saturated solution), 40 c.c. 

 Glycerine, 50 c.c. 



Mix and combine with three parts of the gly- 

 cerine gelatine injection mass as in the preceding 

 formula. 



Aqueous Injection Fluids. 



CARMINE. (Emery's formula.) 



To a 10 per cent, ammoniacal solution of carmine 

 add acetic acid, with constant stirring, until the 

 colour of the solution becomes brilliant red. After 

 the precipitation of the carmine, pour off the super- 

 natant fluid and inject the clear solution. Place 

 the injected specimens in strong alcohol to fix the 

 carmine. 



CARMINE. (Gerlach's formula.) 



Carmine, 77 grains. 

 Distilled water, 70 grains. 

 Liquor ammoniae, 8 minims. 



Dissolve the carmine in the ammonia and water, 

 and leave the solution exposed to the air until all 

 5 



