Croup. Croupous (^Pseudo- Membranous) Laryngitis. 139 



food liquid or solid. The weak, hacking, convulsive cough is 

 associated with the discharge of a whitish glairy mucus by the 

 nose until the third or fourth day when false membranes may be 

 expected. 



Treatment is like that for the ox, medicine being given in 

 about one-fifth of the doses. 



CROUPOUS LARYNGITIS IN PIGS. 



Kept in filthy pens, in impure air, and allowed to lie on, and 

 burrow in masses of decomposing manure, the pig is especially 

 subject to severe attacks of sore throat, and the attendant in- 

 flammation is often associated with the formation of false mem- 

 branes. The sloppy diet given, and the large demand of the 

 healthy porcine system for abundance of pure air, tend to beget 

 in these circumstances a strong predisposition, and the confined 

 unwholesome pens preserve stores of infecting microbes ready to 

 seize upon the debilitated system or tissue, which has thus been 

 deprived of a large part of its resisting power. Once started on 

 a pathogenic career, these microorganisms acquire more and 

 more power of injurious survival in the body, and thus the affec. 

 tion spreads as an epizootic to all denizens of the same pen or 

 establishment. Cold rains or sleet, chilling draughts of air, ex- 

 cessive summer heat, severe thunder storms (electric tension), 

 and all debilitating conditions contribute to the predisposition or 

 become the occasion of an attack. As in nearly all affections 

 attended by microbian invasion, young pigs suffer more than the 

 mature, and high-bred delicate races (Berkshire, Essex, Suffolk, 

 Yorkshire, Chinese, Poland-China, etc.,) show a special sus- 

 ceptibility. 



Symptoms. These are dullness, stiffness, inappetence, a dis- 

 position to mope apart, or burrow under the litter, a hard, dry 

 painful cough, swelling of the throat, movements of the jaws, 

 and it may be frothing at the angles of mouth. Examination of 

 the mouth shows in the early stages more or less redness, becom- 

 ing intense as it approaches or involves the soft palate and 

 tonsils. These parts are covered by a grayish or yellowish- white, 

 grumous exudate and a similar material, more or less foul smell- 

 ing, escapes from the nose and mouth. Very soon, patches of 



