Dourine. 575 



adjacent. Paraphymosis is occasionally seen or more commonly, 

 the penis hangs out of the sheath soft and flaccid and erection 

 seems impossible. The local swelling may become excessive, 

 pressing the testicles up against the inguinal ring, or suppuration 

 and extensive abscess may follow. Appetite is retained and the 

 temperature remains moderate (ioo° to 102" F.). 



The local swellings may almost completely subside, except a 

 .■slight tumefaction of the end of the penis, hence some (Fischef ) 

 have held that the cutaneous lesions are the primary ones, yet the 

 start of infection at the generative organs and the fact that a 

 stallion often infects a number of mares before there is any sus- 

 picion of his own infirmity is evidence enough of the genital seat 

 of the earliest lesions. 



The cutaneous lesions, which are essentially secondary, but 

 liighly characteristic, appear from forty to sixty days after the 

 infection (Schneider and Buffard). They are from a quarter of 

 a dollar and upward in size (in some old horses much smaller), 

 and rise abruptly from the healthy skin, becoming the more marked 

 that the hairs upon them stand erect. These may arise suddenly 

 and subside again in one day, or give out a serous exudate 

 which mats the hairs into a tuft. They may, however, last four 

 or five days. These are more patent after a full drink of water, 

 or after sprinkling or sponging with water. Even when they 

 have been overlooked these results may often be seen later on 

 colored skins, in the presence of many circular white spots entirely 

 ■devoid of pigment. The most common seat of these cutaneous 

 lesions is the hind parts (anus, tail, croup, quarters), but they 

 may appear on the sides, neck, shoulder or thighs. 



Tendernpss of the loins may now be shown, with frequent, 

 painful micturition, but the penis becomes more and more paretic, 

 so that coition becomes encreasingly difficult or impossible. 

 Paresis also shows in the hind limbs, the animal remains recum- 

 bent a great part of the time, rises with difficulty, starts .suddenly 

 forward at the fetlock, and drags the toe on the ground in walk- 

 ing. Swelling of the joints and tendinous sheaths, with attend- 

 ant lameness, is not uncommon. The appetite remains good, yet 

 emaciation and weakness make marked progress. 



The advanced stages are characterised by marked anaemia, par- 

 aplegia and dementia. The visible mucosae are pale, emaciation 



