464 Veterinary Medicine. 



or of tar, etc. An excellent emollient paste is compounded of zinc 

 oxide and vaseline one-half ounce of each, salicylic acid, ten 

 grains. Oleate of lead is an excellent sedative application in irrita- 

 tion or pruritus. 



Drying powders are found in starch, talc, magnesia, zinc 

 oxide, lycopodium, bismuth oxide, boric acid, iodoform, aristol, 

 salicylic acid, tannin, and, above all, magnesia carbonate. A 

 slight addition of morphia sulphate will render them analgesic. 

 Tar in zinc oxide or bismuth will secure antiseptic and stimu- 

 lating qualities. 



Protective films for irritable surfaces may be had from col- 

 lodion, or from a .solution of gutta percha in chloroform i : 10 

 (traumaticin). 



Stimulating and antiseptic applications are found in tar or 

 oil of tar in suitable excipient and of a strength suited to the 

 case, oil of white birch, oil of lavender, oil of cade, oil of ca.shew 

 nut, oil of juniper, oil of hemlock, Canada balsam, balsam of 

 Tolu or Peru, creolin, ly.sol, cresyl, creosote, carbolic acid, 

 chloro-naphtholeum, etc. Ichthyol, of great value in chronic af- 

 fections, may be used in oil or va.seline (5 : 100), or in the form 

 of Nuna's varnish : Ichthyol 40, starch 40, concentrated albumen 

 solution I to 13^, and water 20. Add the water to the starch, 

 then rub in the ichthyol and finally the albumen. Resorcin is a 

 useful stimulant, alterative, and antipruritic f i : 30 alcohol and 

 oil). 



As antiseptics and parasiticides, in addition to the above, 

 are alpha- and beta-naphthol, iodized phenol, chloral camphor 

 (rub together till they form a clear fluid), phenol camphor (add 

 camphor gradually to the melted phenol crj^stals), mercuric 

 chloride, cupric sulphate and silver nitrate. Pota.sh (green) 

 soap, medicated or not with tar or other agent, is of great u.se in 

 many chronic affections. The phenol combinations are all more 

 or less anaesthetic, and therefore sedatives and antipruritic. 

 Quassia, Stavesacre, tobacco, etc., are of great use in para.sitisms 

 though not antiseptic. Sulphur fills both indications, and is a 

 bland generally applicable agent. 



Caustics (silver nitrate, antimony chloride, electric or thermo- 

 cautery) are useful in luxuriant granulations, hyperplasias, and 

 often in excessive secretion, or on infected surfaces. 



