MEDICINES. 589 
41, Sweatina BLisTER — 
Strong Mercurial Ointment . . . . . . . 2 ounces, 
OilorOereemimys 5 5 6 6 6 | 5 6 6 5 Aoberdhia 
Corrosive Sublimate ....... . . 2drachms. 
Cantharides, powdered. . . . . . . . . 8drachms. 
Mix, and rub in with the hand. 
42. Strona SweEatTine BLisTER, FOR SPLENTS, RrnG-Bonss, Spavins, &c.— 
Biniodide of Mercury . . . . .. . . . 1to013drachm. 
WemblS Go 0 0 4 0 6 28 Boe 36 gabe. 
To be well rubbed into the legs after cutting the hair short; and followed by 
the daily use of Arnica, in the shape of a wash, as follows, which is to be painted 
on with a brush :— 
NinebureiofeArnicas.see ees es a «ss « Lounce: 
WEES 6 5 of oo6 6 6 6 5 0 6 Go Ge ge Orel @enees: 
Mix. : 
43. Liguip SwEATING BLISTERS— 
Cantharidess) .0-metmesn ane en en. 1 Ounce: 
Spirit of Turpentine .... .. . . . 2 ounces, 
Methylated Spiritof Wine . ..... . 1 pint. 
Mix, and digest for a fortnight. Then strain. 
44, Powdered Cantharides. . . Dien cmp eounces 
Commercial Pyroligneous Acid ee ean pints 
Mix, and digest for a fortnight. Then strain. 
CAUSTICS, OR CAUTERIES. 
Caustics are substances which burn away the living tissues of the 
body, by the decomposition of their elements. They are of two kinds— 
viz. first, the actual cautery, consisting in the application of the burning 
iron, and called firing ; and, secondly, the potential cautery, by means of 
the powers of mineral caustics, such as potassa fusa, lunar-caustic, cor- 
rosive sublimate, &c. 
Firine is described in the chapter on Operations, at page 575. 
The following are the ordinary chemical applications used as potential 
cauteries :— 
45. Fusep Porass, difficult to manage, because it runs about in all directions, 
and little used in veterinary medicine. 
46, Lunar Caustic, or Nitrate of Silver, very valuable to the veterinary 
surgeon, and constantly used to apply to profuse granulations. 
47, SULPHATE OF CopPER, almost equally useful, but not so strong as Lunar 
Caustic; it may be well rubbed in to all high granulations, as in 
broken knees, and similar growths. 
48. CORROSIVE SUBLIMATE in powder, which acts most energetically upon 
warty growths, but should be used with great care and discretion. It 
may safely be applied to small surfaces, but not without a regular 
practitioner to large ones. It should be washed off after remaining on 
afew minutes. For the mode of applying it in castration, see page 579. 
49, YELLOW ORPIMENT is not so strong as Corrosive Sublimate, and may be 
used with more freedom. It will generally remove warty growths, by 
picking off their heads and rubbing it in. 
50. Murrate or Antimony, called Butter of Antimony; a strong but rather 
unmanageable caustic, and used either by itself or mixed with more or 
less water. 
51. CHLORIDE oF ZINC is a most powerful caustic. It may be used in old 
sinuses in solution, 7 drachms in a pint of water. 
MILDER CAUSTICS :— 
52. Verdigris, either in powder or mixed with Lard as an ointment, in the 
proportion of 1 to 3. 
58. Red Precipitate, ditto, ditto, 
54, Burnt Alum, used dry. 
55. Powdered White Sugar. 
