98 THE DISEASES OF HORSES. 



the rcot of white hellebore 2oz., nitrate of po'ash ^oz., spirit of tar 4oz., 

 soft soap $lb., and lard (free from salt) l^lb., mixed. A common prejudice 

 exists with ignorant persons in favour of Sulphur vivum, or black brim- 

 stone, but it is really the residuum from the sublimation of the sulphur, 

 is always impure, and sometimes dangerous from the presence of arsenic. 



Iodide of Sulphur is used as an internal medicine, but it should 

 only be given under professional advice. In the form of ointment, how- 

 ever, it may be resorted to with perfect safety and good results in cases 

 of ringworm and mange in the horse or any other animal, applying a 

 little of it to the affected part twice a day until a cure is effected. 

 The ointment is made by mixing one part of the iodide of sulphur 

 with seven parts of lard, and it should only be made as required, as it will 

 not keep. 



Sulphuric Ether.— See Ether. 



Sweet Spirit of Nitre.— See Ether. 



Tar. — This is too well known to need description. The sort referred to 

 here is the northern or Stockholm tar. It is a useful application in thrush 3 

 and two parts of it mixed with one part of soft soap and stiffened with 

 linseed meal makes an excellent " stopping for feet," in ever}- way superior 

 to the filthy applications in too general use. 



Turpentine.— See Oil of Turpentine. 



Verdigris.— See Copper. 



Vitriol, Blue.— See Copper. 



Vitriol, Green.— See Iron. 



Vitriol, White.— See Zinc. 



White Precipitate.— See Mercury. 



Wolfsbane.— See Aconite. 



Zinc. — There are few preparations of zinc that need mention. Car- 

 bonate of zinc or calamine mixed with six parts of lard makes a cooling 

 ointment, or it may be sprinkled as a powder over ichorous sores. 



Acetate of Zinc.— To make a solution of this, dissolve loz. of sulphate 

 of zinc and loz. of superacetate or sugar of lead in 1 gallon of soft water, 

 shake well and pour off the clear liquid, which often proves of great use in 

 reducing swelled legs ; for this purpose, the bandage should be thoroughly 

 saturated with the solution and put pretty tightly on and covered with a 

 dry flannel bandage. 



Chloride of Zinc is a powerful disinfectant, destroying the effluvia 

 of putrescence in wounds, and is useful for ordinary disinfecting purposes, 

 but care must be used with it, as it is very poisonous. Sir William 

 Burnet's disinfecting fluid is a solution of chloride of zinc. It is 

 also used as a lotion for open joints and to foul sores. The strength should 

 be 1 grain to loz. of distilled water. This is also a good application for 

 canker of the foot, fistulous withers, quittor, &c. 



Sulphate of Zinc, or White Vitriol, exists in small crystals, not 

 unlike Epsom salts ; it is used as an eyewash and also as an astringent 

 to various discharges, such as grease. 



