42 



almoft always eating, and that the food is neceffarily 

 paffing off very quickly, fo in him it was neceflary 

 that the bile fliould conftantly flow. The liver of 

 moft animals intended for quick motion is wifely 

 divided into feveral lobes [vide frontifpiece^, and 

 not, hke that of man, formed nearly into one great 

 mafs : by this divifion into parts, the great exertions 

 of the animal in leaping, running, &c., are not inju- 

 rious to the organ. The kidneys are two important 

 glands [vide w«, frontifpiece], deftined to feparate 

 the watery parts from the blood : thefe glands are 

 .more certainly a^led on in the horfe than in man : 

 hence diuretics, or urine medicines, are given with 

 certainty to horfes, and never fail of their effed. 



The newous fiijflem is a fpecies of primum mobile— 

 a fpring whereby all the adions of the body are fet 

 in motion : this fyftem is formed of the brain, which 

 is placed in the fkull; and of white cords called 

 nerves, that diftribute the influence of the brain to all 

 parts of the body. 



The eyes in a horfe are very acute ; and quadru- 

 peds in general fee better, particularly at night, than 

 man : the bottom of their eye is darker, and there- 

 fore better fitted to retain the light. Man defends 

 his eyes with his hands ; but quadrupeds, not having 

 fuch means, are kindly afforded others which man 

 is denied. A horfe has a mufcle furrounding the 

 optic nerve that can draw the globe of the eye within 



