INFECTIOUS DISEASES. 521 



Founder occurring as a coniplicaiion of inlliionza is tliflicult to treat. 

 It is, unfortunately. frc(|U('ntly not rcc(i«rni/.iHl until inllanunatory 

 chan«;k's haxc <;<ino on ft)r isc\eral days. If reco«jjnized at once, l<)«al 

 Meeilino; and the use of hot or cold water, as the condition of the ani- 

 mal nuiy porniit, are most useful, hut in the majority of ca.ses the 

 stupefied animal is unable to be moved satisfactorily or to have one 

 foot lifted for local treatment; the only treatment c()nsi.sts in local 

 i)lcodin<r above tlie coronary bands and the application of poultices. 



louring convalescence small doses of alkalinesmay be kept up for a 

 short time, but the greatest care must be usi'd, while furnishing the 

 aninuil with plenty of nutritious, easily digestible feed, not to over- 

 1< ud the intestinal tract, causing constipation and conse<juent diar- 

 rhea. Special care mu.st be taken for several weeks not to expose the 

 auinuil to cold. 



Pirrenfion. — In order to prevent the introduction of the disease it 

 is advisable to isolate newly purchased animals for at least a week. 

 Fuilher, the stabling of healthy horses in sales and feed stables 

 should aLso be guarded against. At the beginning of an outbreak the 

 tlisease may be checked by inunediate isolation of the affected horses, 

 by taking the temperatures of the healthy animals, and by tlie segre- 

 gation of those showing a marked elevation. 



Bacterial vaccines are now being prejiared for the prevention of this 

 disease and also for its cure, but to date the results are not convincing 

 as to the beneficial action of these products. Since the cause of the 

 disease has not yet been satisfactorily determined it is difficidt to 

 conceive how immunity could be produced with the aid of tlie germs 

 which enter into the preparation of these products. The reports 

 would indicate, however, that vaccines exert a favorable influence 

 upon the course of the disease, probably preventing .severe complica- 

 tions which under ordinary conditions are the principal factors in 

 determining the severity of the outbreak. 



CONTAGIOUS PNEUMONIA. 



SiinonyniJt. — I'Mematous pneumonia; stable )iiieiimonia : fH]uino itloin'ormon- 

 nionia ; Influenza poctornlis equoniin ; ]>l»'un)iiii<«uni(>iiia ; iiilliK-nzal laii'UiiKiiiia ; 

 Itrust-seuchf ( German ) . 



Contagious pleuropnuemonia is an acute contagious disease of 

 horses manifesting itself either as a crou])ous pneumonia or a ))leuro- 

 j)neumonia with complications in the form of sei(»>is iuliltratioiiv «if 

 the subcutaneous tissues and tendons. 



Ktlohiini. — Investigators of this disease incriminated various kin<ls 

 of microorganisms as the cause of this affection. Transmission ex- 

 periments were usually negative with these organisms. This was also 

 the case in attempts to transmit the disease by feeding with affected 

 jiarts of tlu" lungs, intestinal contents, and nasal discharge; like- 



