OF THE EYES. 381 



great difficulty of solving a stone in the hu- 

 man body, to effect which so many unsuccess- 

 ful attempts have been made ; the mere solu- 

 tion of the calculus out of the body is a matter 

 universally known to the faculty ; but the 

 great and difficult object of cure is, to dis- 

 cover a solvent that will act upon tlie stone 

 in the bladder of the patient without injury 

 to the parts in its passage, or where it is con- 

 tained. 



This is a blessing too great, I fear, ever to 

 be obtained by even the noblest exertions of 

 human study and application. Seeing, there- 

 fore, the cause just treated on in nearly a 

 similar point of view, with the almost palpa- 

 ble impossibility of removing such obstacles, 

 without increasing the malady, I am conse- 

 quently prevented from introducing a chain 

 of prescriptions that can positively only 

 amuse or deceive, as the methods hereafter 

 pointed out for the relief of different causes 

 or external injuries may be in the above 

 cases adopted as palliatives, according to 

 circumstances ; but sorry I am to acknow- 

 ledge, that in such instances nature will, 



