198 COLDS, &c. 



palTage to the blood vefTels; and, intermixing 

 with the niafs, . produce different degrees of 

 difeafe, afting differently upon different fub- 

 je6ls; the injury fuftained being in fome ref- 

 pecSs regulated by the degree of heat or per^ 

 fpiration the horfe was in at the time of being 

 expofed to the original caufe. This circum- 

 ftance once colleded, upon the foundation of 

 fuch inquiries, fome idea may be formed of its 

 probable duration and feverity. The effecfts of 

 cold are not only foon difcovered where there 

 is a conftant attention and care, but an obfer- 

 vation may be very early made to what part it 

 more immediately direds its attack. For in- 

 ftance, if the nervous fyftem is the moft irrita- 

 ble, you fpeedily perceive it in the eyes^ if 

 the glandular, upon the neck, throat, un- 

 der the EARS, or in the head; if more parti- 

 cularly upon the blood (in which both the veffels 

 and their contents are concerned) the whole 

 fyftem of circulation being affeded, you foon 

 difcbver its feat to be taken upon the lungs j 

 and will perceive it difplayed more or lefs in a 

 COUGH, or difficulty of breathing, according 

 to the feverity of attack, from the proportion of 

 perfpirable matter repelled (become morbid) 

 ^nd compulfively abforbed into the circulation. 



