The Anatomy of a HORSE: 109 



it will be necefTary to confider, that the Blood, examined 

 chymically, is found to confift only of the following Prin- 

 ciples, vi%. Volatile Salt and Spirit, fome Phlegm and 

 Sulphur, and a little Earth, but little or no fixed Salt. 

 Now every one, who is the lead acquainted with Chymi- 

 ftry, muft be fenfible how many different forts of Liquors 

 may be form'd out of a few Principles varioufly combined 

 together : So that although the Blood itfelf fimply con- 

 fifts only of thefe above-mention'd, and to the Eye feems 

 only to be made up of its red and ferous Part ; yet, ac- 

 cording to the lateft Obfervations, there are near thirty 

 feveraf Liquors feparated from it ; all which is owing to 

 the various Strufture of the Glands, fome of which are fo 

 fmall, and fo varioufly wound up, and their Veilels drawn 

 out into fuch extraordinary Length, that Nothing but the 

 moft minute and fpirituous Particles of the Blood can pafs 

 through them ; and doubtlefs, of fuch a Sttudure is the 

 cortical Part of the Brain, by which the Animal Spirits are 

 fecerned. Others again are more wide, and feparate chiefly 

 Excrements. But I fhall not enter upon this Subjea, fee- 

 ins; thofe who have any Curiofity that Way, may be fully 

 fatisfied by perufmg feveral Books that have been profefled- 

 ly writ on that Subjedt, 



The End of the Anatomy of a Horfe. 



