CHAPTER XXVI. 



SWINE MK.\S1-KS. — DISTEMPER IN DO(iS. — KPIDEMIC DISEASE OK 

 I'lOKUETS. — EPIDEMIC DISKASIO OF MU'IC. 



SwiNE Measles. 



l?>\viNis M nAsi-ns, or swiuo ei'ysipolas, is dosi-riboil as au aouto, iu- 

 fiH-tioiis (li.s(>a.so of swine \vliicl\ is vory pi'ovaloiit in France and 

 (u>rni!iny, but is ini'hvdoil in this cduntry in the (orni " swino tovor.'' 

 Aivoi'(Ung to soiuo, it is ii ilistinot (Uvsoiuso, and dislinguishoil from pig- 

 typhoid by absoiu'o of tlio idcoration of tho intostiues whit'li is so 

 ohavaotoristif of that disinuso ; \\l\ilo, ai'i'oi'dii\g to ()(hors, ulceration 

 of tho intcstino a.ud iloo-riooil valve may be found post-mortem. The 

 onset of tlie symptoms, as in pijj typhoid, is vw'y rapid ; tln> animals 

 cease to feed, and show other general sig'os of illness; tlie \'oiee is 

 lionrse, and theiv is a rapid rise of temperatuie. Ou the neck, 

 ehest, and alidouu>n, red patches ninUe their appearance, which 

 extund and coalesce, and change to a. dark reddisli or brownisli colour, 

 'riiese symptoms may be followed by convulsions, and sometimes by 

 paralysis of the hind li\i>'s ; and death occiu's in from one to four 

 days. It is especially a disease of young pigs, and from 50 to 60 

 per cent, of infected jinimals die. 



On post-mortem examin.ition tlun'o is ha-niorrhage and iwlema. 

 in the patches of the skin, the lymphatic glands are swollen and 

 diU'k red, the peritoneum is occhymosed, the intestinal mucous 

 membrane is congested and swollen, and the solitary follicles and 

 P(>yer's patches are prominent, and in the neighbourhood of the ileo- 

 civcal valve theiv are, iiccovding to KlUgge, ulcers of considw'able size. 

 The liver and spleen are congested and enhirgeil. Pasteur investi- 

 j(a.ted swino measles or roiitjct, and described a ligure-of -eight micro- 

 coccus, whicl> lie beliexed to be the contagium of this di.sease. This 

 organism appears to be identical with the bacterivnii of ha-morrhagic 

 .M>ptic«>mia, which is also ci>mmonly found in pig-tiyphoid. 



In experimenting with the xii'us obtained from the spleen 



365 



