230 EXERCISE. 



paflage (by its conftant heat and irritation) 

 frequently occafions excoriation ; the eye 

 gradually contrading and finking in its orbit, 

 in proportion to the length and inveteracy 

 of difeafe. This defluxion is fo very oppo* 

 iite in caufe and effed:, and requires a fyftem 

 of treatment fo very different to the cafe 

 juft defcribed, as arifing from a vifcldity in 

 the bloody (conftituting humour of a diftind 

 kind) that a nicer judgment is neceffary than 

 generally exerted in fuch difcrimination. 



I n cafes w^here one eye only is affedted in 

 either of the ways before-defcribed, it may 

 with a great degree of reafon be attributed 

 to external injury, and the refnlting pain, 

 inflammation, or difcharge, fo far dependent 

 upon the original caufe as to be merely fymp-^ 

 tomatic j unlefs from the great irritability 

 and exquifite fenfation of the part, fome of 

 the humours of the eye fliould be fo feverely 

 injured as to occafion its lofs ; a circumftance 

 that is too frequently known to happen by 

 an accidental blow, but undoubtedly many 

 more by thofe wilfully aimed and fatally 

 executed. 



As 



