OF THE EYES. 377 



muft poflefs incredible virtue to prove equally 

 applicable to an organ of fuch exquifite fenfi- 

 bility, and the foul furface of an inveterate 

 ulcer. Bartlet*s wonderful noilrum of ivhite^ 

 vitriol and fugar candy is alfo moil iingularly 

 entitled to admiration-, for the corrofive qua- 

 lity of it's ingredients, and the mode of appli- 

 cation taken into the confideration, vi^ill ren- 

 der it unneceffary for me to obtrude a fingle 

 thought of my own upon the occafion. But 

 the infallible Jpecific of Bracken cannot be 

 fuffered to pafs without proper refpeSi^ as it 

 muft afford matter of fpeculation to the curi- 

 ous, to inquire by what means an eftabliilied 

 compofition for even the deftrudlion of rats, 

 fliall be fo ?72agicaUy diverted of its pernicious 

 efFeds, as to be admitted. a falutary application 

 to that part of the frame endowed witli the 

 greateft portion of fenfibility, 



Thefe remarks fubmitted to public confide- 

 fation, we proceed to expatiate upon the dif- 

 ferent difeafes of the eyes, whether as natural 

 blemiflies, hereditary defedls, or proceeding 

 from external injuries. Such lift might be 

 very much extended by enlarging diftindlly 

 upon the remote and feparate diforders^ as the 



gutta^ 



