■ 52 Veterinary Medicine. 



under the litter and lies there, preferably on its belly, a great part 

 of its time, there may even be tremors suggestive of slight chill, 

 when moved it shows weakness, may stagger, or it may have 

 difficulty in rising on its hind limbs and there is encreased thirst 

 and heat of the skin. Even in the absence of shivering or chill, 

 the skin is usually tender to the touch, calling out plaintive grunt- 

 ing or squealing, and the same is often true of manipulation of the 

 belly. The temperature is raised, yet this must be compared 

 with the previous temperature under the conditions in which the 

 pig has been kept. That may have been anywhere from loo ° F. 

 in a confined, cold, draughty pen, to 104° F. in a warm, dry pen 

 and with plenty of exercise. In hog cholera it may rise i ° to 3 °- 

 The patient is breathless under exertion, the circulation is accel- 

 erated and the mucosae congested. 



Sooner or later, (usually by the second or third day) the skin 

 shows an erythematous blUsh, especially on the ears, breast, belly 

 and inner sides of the thighs and forearms, in greater part eflaceable 

 by pressure but promptly reappearing and complicated by darker 

 spots of extravasation which retain their color under pressure. 

 The blush may appear in spots of y^^ to \ inch in diameter, or .it 

 may cover the region, or indeed the whole body uniformly. At 

 first of a brighter red it tends to pass in succession through the 

 different shades of purple and violet. Appetite becomes more and 

 more impaired, and in exceptional cases vomiting may occur, but 

 often the pig will drink liquid food to the last. A marked symp. 

 tom is the enlargement of the inguinal lymph glands, which may 

 even be tender. An early symptom is watering of the eyes, and 

 later a muco-purulent exudate may form, and drying, gum the 

 lids together. An abundant exudate appears on the skin as 

 the disease advances, most abundantly about the eyelids, roots of 

 the ears, axillae and groins, but often covering the whole body, 

 forming a foul greasy inunction, and later a black scaly covering- 



The bowels may be costive at first, with faeces, firm, moulded, 

 and covered with mucous, and this may continue to the end. In 

 most cases, however, about the second or third day they become 

 soft, pultaceous and finally liquid, profuse, foetid, and mixed with 

 abundance of mucous or even blood. The color varies, they may 

 be whitish, yellowish ( on maize diet ), red, or black ( on swill ). 



Petechise usually form on the mucosae and small sloughs and 

 ulcers may be found on the lips, tongue or elsewhere on the buc- 

 cal mucosa. 



