CHAPTER li. 

 GENERAL CONSIDERATION OF DISEASE. 



PEFINITIoy 

 CLASSIFIC.ITION as to, 

 Time iiffcctcd. 

 Inherited. 



Definition. 

 Predisposition. 

 Tumors. 

 Neuroses. 



Malformations — not rare.. 

 Infeetions — rarely if eirr. 

 Aequired. 



Definitiou. 



.-Inteniital — ( eon<ienHal) — ll.rantlicma. 

 Postnal — .Sl^a-ein. 

 E.rtent in atfeeted aiiinials. 

 Loeal — nifiainination. 

 Genei'al — anllva.r. 

 ETIOJ-OGV. 



Predisl^osnig. 



Heredity — Efiflefsy. 

 Inbreeding — General debility. 

 Age — Canine and colt distemper, blaekleg. 

 Sc.v — Males urethral calculi; females, peritonitis. 

 Genus — Hogs, cholera; cattle, blackleg. 

 Breed — Clydesdale, laininitis; jersey tuberculosis. 

 Coloi — ll'liltc animals, sunburn. 

 Location — Pica. 

 Climate — Contracted hoofs. 

 Season — Pneumonia , insolation. 

 Food and Water — Indigestion. 



Occupation — City liorses. foot disease; dairy coiu, udder disease. 

 Effects of prei'ions disease — Purpura Jiemorrhagica. 

 Exciting. 



Mcch.anic — Fractures, dislocalions, sprained tendons. 

 Physic. 



Electric — Lightning stroke, electric wires. 

 Thermic ; Rums, oz'crlieat, free::ing. 

 Chenii^- 



Inorganic — Saturnism. 

 Organic — Sorghum poisoning. 

 Poisonous plants — Loco, hemlock, larkspur. 

 Poisons secreted by snakes, bees, etc. 

 Parasitic. 



Bacteria — Glanders, tuberculosis. 

 Yeast — Epizootic Ipnpliangitis. 

 Moulds — Pulmonary mycosis. 

 Protozoa — Tick fever. 

 J'ermes — Trichinosis. 

 EXTENSION. 



Natural channels — Digestic, urinary, etc. 

 Continuity — .-llong a muscle, etc. 



Contiguity — From muscular to connecfive tissues, etc. 

 Blood — In plasma, leucocytes or red cells. 

 Lymph — In plasma or leucocytes. 

 Ner'oe fibres — Alongaxone. 

 TERMINATION. 



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