CH. III.] LYMPHATIC NATURE OF THE CORDED. 379 



fine vessels, as aforesaid. Hot and crowded stables 

 relax the vessels, and indeed the whole system, 

 when sudden exposure to the air inflicts the same 

 evil we have just now contemplated. The reader 

 may recollect that we referred the cause of fever 

 to the same want of ventilation, to the same ex- 

 posure to cold air, and made the remark, that the 

 state of the animal's bodily health at the period of 

 the attack would determine whether it should 

 acquire this or that particular disease : the quantity 

 and kind of cold, or chill, would also determine 

 whether the horse should be afflicted with inflam- 

 mation of a certain part of his inside, or of his 

 whole system, which we term fever. 



Symptoms. — Though too well known to be mis- 

 taken, we yet may describe them, as, in the first 

 place — skin tight and dry, for want of perspiration, 

 as just said, when some swelling is perceivable 

 about the hind legs, and on the insides particularly. 

 This symptom increases to an extremely large size 

 in the course of a night, when the genial heat of 

 the animal's system, and of the stable, appear to 

 have matured the disease. The lymphatic vessels, 

 and the more perfect glands, that run in the same 

 direction as the veins, rise above the surface ; and 

 it is easy to be seen that they are sore when touched, 

 the glands in particular, which feel hot, tight, and 

 hard at first, similarly to the glands of the throat, 

 as described in the glanders. A few hours confirm 

 the exact nature of the mischief: the inflammation 

 of those glands proceeds, they become softer, and 





