I 373 ) 



CLASS XL 



DISORDERS OF the EYES. 



There is no one part of this traft more 

 entitled to ferious inveftigation than the fub- 

 jed: now before us ; for as no blemifh or defed: 

 can take fo much from the original value of a 

 horfe as the lofs of his eyes, fo it unluckily 

 happens there are few cafes lefs underflood 

 or more improperly treated. The rays of 

 information can be but trifling to the general 

 reader, from a dull anatomical defcription of 

 the gloie, tunica cornea ; the aqueous, cryJlaU 

 line^ and vitreous humours ; the diftindl ante- 

 rior or pofterior chambers-^ the adion of the 

 mufcles or the optic nerve. The elaborate 

 ftudy of fo complicate and delicate a ftrudlure 

 (in the formation of which fuch an infinity of 

 B b 3 parts 



