PLEUEO-PXEUMONIA. 299 



then — and then only does the farmer observe tliat the 

 animal is sick. The presence of irritation in the windpipe 

 can be detected by placing the ear close to the windpipe, 

 previously tightening the skin upon it, Avheu a slight 

 grating sound is heard. The immediate effect of irritation 

 of the windpipe of the cow, is a slight discharge of an 

 acrid fluid, of the appearance of v/ater, from the corners of 

 the eyes and nose, which is, however, sometimes so slight 

 that most persons fail to see it, and if they did, would 

 attach no importance to it — so the first, and most impor- 

 tant time and symptom is passed by uncared for, unheeded 

 and unchecked. The next and important symptom is a 

 half involuntary cough, or rather a hushing sound — not the 

 clear cough Avhich horses give, when similarly affected. 

 When cough is heard, it may then be said the incubative 

 stage has passed av/ay. I have said incubative, although 

 not believing in the existence of such a thing, if it be not 

 in the j^^assive condition of the minds of men, who give 

 credence to such a theory. The milk now becomes smaller 

 in quantity, thin and blue; cough louder and oftener; 

 breathing quick and labored, accompanied with a grunt; 

 rumination is irregular, and the appetite precarious. Such 

 then arc the symptoms that may be seen by the ordinary 

 observer. Auscultation and percussion applied to the sides 

 of the chest, are not to be relied upon by persons Avho are 

 not accustomed to the chest murmurs, or sounds in health 

 and diseases. Animals in good condition rally from the 

 attack and get well, without assistance from medicine or 

 art. In weak and low conditioned animalp-, the disease 

 and sym])toms are gradual and progressive, and they 

 finally die in from two weeks to two months. 



Treatment. The success of the treatment here recom- 

 meuded, will depend upon, 1st. Wiiether the animal be iu 



