CHAP. II.] CAUSE AND SYMPTOMS. 34-3 



or cold rain. The season of shedding the teeth, 

 when the contiguous parts are unusually tender, is 

 that in which swelling similar to lives pervade ani- 

 mals of any species. Nevertheless, it sometimes 

 attacks horses at an advanced age, notwithstanding 

 they may have previously got over the most healthful 

 form of strangles, when we might reasonably sup- 

 pose nature had ridded itself of a disposition to 

 secrete any more such pestilent matter. Want of 

 the usual head-clothing is then the immediate cause 

 of vives. The violence deemed necessary in break- 

 ing colts also causes the vives, when the pressure 

 on these parotid glands, at reining up the animal, 

 irritates the parts. 



Symptoms. — Swellings under both ears, gene- 

 rally, that occasion manifest pain when touched: 

 the animal coughs more than one which has the 

 strangles, and a difficulty of swallowing soon be- 

 comes evident. Stiffness or aridity of the neck 

 follows, and the patient makes frequent efforts to 

 swallow the saliva, which it is the proper function 

 of these glands to secrete, but which they are soon 

 disabled from sending forth by reason of the inflam- 

 mation having choked up the orifice whence it 

 issues. Of Glands generally, their construction 

 and uses, the reader will find many, instructive 

 particulars in the first book, at page 92 ; these of 

 which we now speak being called " the parotid 

 glands," from their situation under the ears ; and 

 as they now refuse to part with their secretion, the 

 watery humours flow from out the animal's eyes, 



q 4 



