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THE VETERINARY SCIENCE 
caustics, such as chloride of zinc, nitrate of silver and caustic 
potash. It is used externally in the form of liniments. See 
also the receipt for acid liniment, Chapter V. 
22. Sulphate of Copper. 
Source. — Sulphate of Copper, blue vitriol or blue stone, 
is in the form of a blue crystal. 
Action and Use. — Its chief action when given internally 
is in checking discharges, such as nasal gleet or chronic 
catarrh, and whites or leucorrhoea. For this purpose, refer to 
the receipt to be used internally in the above named diseases. 
Externally, it is used for wounds that are not healing well 
and have proud flesh in them, by grinding it fine and dusting 
it on the wound every two or three days according to how 
much it burns it. 
23. Sulphate of Iron. 
Source. — Sulphate of Iron, or commonly called green 
vitriol, is in the form of a crystal, similar to sulphate of 
copper, only of a lighter shade in color. 
Action and Use. — It is one of the best mineral tonics and 
is used combined with gentian, in equal parts, for almost 
every case where the system is run down and requires 
building up. For horses and cattle give a teaspoonful three 
times a day; for sheep and pigs give one-half a teaspoonful. 
It is also used in the same form for killing long round worms 
and pinworms in horses. For full directions as to how to use 
it in this case refer to the receipt of worm powders given in 
this Part. 
24. Sulphate of Zinc. 
Source. — Sulphate of Zinc is used in the form of a white 
crystal powder, and resembles Epsom salts in appearance. 
Action and Use. — When used internally it is in the form 
of an emetic to cause vomiting. As to how it is used refer to 
"Poisoning," Part IV. When used externally it has a heal- 
ing action. See the receipt of white lotion. It is also used 
as a drying wash for clap or gonorrhoea in horses and whites 
in mares. Refer also to those diseases, 
25. Sugar of Lead. 
Source. — Sugar of Lead is also calied Acetate of Lead. 
