l8 SYNOPSIS OF VETERINARY 



Those which produce extensive sloughing and leave an eschar 

 are called escharotics. 



Actual Cautery.- — Heat, hot iron. 



Potential Cautery. — Chemical agents, such as strong mineral 

 acids, glacial acetic acid, carbolic and chromic acids, strong alka- 

 lies, chloride of antimony, arsenic, and soluble salts of the heavy 

 metals, as nitrate of silver ; chloride of zinc ' and corros. sub. 

 When these are used to arrest haemorrhage they are called styptics. 



Caustics and Escharotics. — Act either by extracting the water 

 of a part, as sulphuric acid, or by corrosive oxidation, as bromine. 



Caustics are used to stimulate indolent ulcers, remove warts, 

 and other growths, and stimulate adhesion of walls of sinuses. 



Setons. — Used instead of blisters or firing; they are fre- 

 quently used instead of firing on account of being less apt to 

 blemish. 



Their irritant action can be kept up for an indefinite length of 

 lime. 



If severe effects are desired, blistering ointment is smeared 

 on them. They are serviceable in : 



Chronic inflammation of joints. 



Muscular atrophy. 



Deep-seated lameness. 



Also used, but of little if any value, for spavins and atrophy 

 of laryngeal muscles which cause roaring. 



In frog for navicular disease, etc. (Useless and dangerous.) 



Rowel. — Is similar to setons. 



'Acupuncture. — Needles 3 to 6 inches in length introduced 

 in fleshy parts by rotary movements. 



Aquapuncture. — Water introduced by hypodermic syringe. 



Actual Cautery. — Hot iron, amends by reflex action, deep- 

 seated faulty nutrition. 



USB OF COUNTER-IRRITANTS.— -In chest diseases, in- 

 fluenza, and other depressing diseases, for reflex action and to 

 arouse heart's action. 



Also for chronic or subacute inflammation of joints ; and in 

 laryngitis. Don't use irritants during a local acute inflammatory 

 stage ; they increase the inflammation and may produce sloughing. 

 Fomentations and poultices are more suitable ; but when inflamma- 



