INFECTIOUS DISEASES. 535 



disease which has tended to render the patient anemic. Dihite sul- 

 phuric and liydrochloric acids are, perhaps, the best examples of a 

 combination of slimulant, astiin«j:oiit, and tonic which can be em- 

 ployed. The simple astrin«;ents of mineral orifrin, sulphates of iron, 

 copper, etc., aiv useful as di«:esti\o tonics; I doubt whether they have 

 any constitutional etlVct. The vejjetable astrin«:ents, tannic acid, 

 etc., have not proved elUcacious in my hands, lodid of potash in 

 small doses serves the triple purpose of difrestive tonic, denutritive 

 for inflanmiantion, and diuretic. Amon«r tiie newer forms of treat- 

 ment are ililuted Luj^ol's solution injected into the trachea, anti- 

 streptococcus serum and colloidal siher solution injected into the 

 circulation. No one but a qualified vetciinarian ^\()uld bo comoetent 

 to apply these remedies. 



Kj'terniiJhj. — Spon«rin<r the swollen parts, especially the hvad, 

 when the swelliui? occurs there, is most useful. The bath should be 

 at an extreme of temperature — either ice cold to constrict the tissues 

 or hot water to act as an emolient and to favor circulation. A'inefjar 

 may be added as an astringent. When we have exces.sively denuded 

 surfaces, suppuration, or open wounds, disinfectants shouhl be added 

 to the wash. 



In cases of excessive swelling, especially of the head, mechanical 

 relief may be recpiired. Even in country practice, punctures of the 

 part shoulii be made with the hot iron, as no other disease so predis- 

 poses to septic contamination. When mechanical asphyxia is threat- 

 ened tracheotomy may be demanded. AVith the first evidence of 

 dyspnea, not due to closino: of the nostrils or glottis, or with the first 

 pawing which gives rise to a suspicion of colic, a mustard plaster 

 should be applied over the whole belly and chest. The .sinapism will 

 draw tlie current of the circulation to the exterior, the metastasis to 

 the lungs or intestines is prevented, and the enfeebled nervous system 

 is stimulated to renewed vigor by the perijihend irritati(^n. The 

 organs are encouraged by it to renewed functional activity: the local 

 infhinunation produeeil by it favors al>sorption of the exudation. The 

 objection to the use of blistei-s is their nu)re se>ere action and the 

 danger cf mortiiication. Sejjticemia, when occurring as a complica- 

 tion, requires the ordinary treatment for the putrid disea.ses. with 

 little h«)i>e of a gcMMJ lesidt. 



After recovery the animal regains its ordinary hialth, and there is 

 no predisposition to a return of the di.sease. 



HORSEPOX, OR EQUINE VARIOLA. 



fiyiinnymK. — Vairiola iHiuina : i»u.slulal' javase; phlyctenold herpes. 

 Dcfn/fiof}. — Ilorsi'pox is a specific, infectious fever of tlie horse, 

 attended by an eruption of pu.stules, or p<;cks, over any part of the 

 skin or on the mucous membranes lining the various cavities in the 



