IMPROVED. 141 



the Kernelly Subilance (as Mr. Gibfon terms It) in 

 the greater Canthus or Corner of the Eye towards 

 tlie Nofe, becomes hard and griilly, infomuch, that 

 I have feen it advance near as far as the middle Part 

 of the Cornea, commonly, tho' erroneoufly, ftiled 

 the Sight of the Eye. And in this Cafe, as I juft 

 now hinted, there is nothing to be done but to cut 

 them away, and the Ointment for fore Eyes before 

 prefcribed, will be fuihcient to heal the Part, at 

 the fame Time it is employ'd to polifli and heal the 

 Diforders of the Cornea or outward Parts of the 

 Eye. 



De Grey makes mention of the French Marjhah A good 

 or Farriers taking up the Wajh of the Eye with a Obfcrva- 

 Needle and Thread, and cutting out the Haw as ^^*^y,° , 

 clofe as they can, but difcommends fuch Praftice, - V / • 

 for as much as that the Horfe becomes blear-ey'd 

 afterwards. Therefore it is befl to cut out fo far 

 only as the griftly Part ( which is really the Haw ) 

 fpreads and no farther, by Reafon if you take away 

 too much of the Glandulous Subftance, there will 

 be a Deficiency in that Part of the Eye ; infomuch 

 that the greater Canthus or Corner will ftand full 

 of Water. So that De Grey has very juftly obferved 

 in this Cafe. 



Mr. Gibfon is very dark in his Reafoning about Mr. Gi//t;7'3 

 feveral of the Diftempers incident to tlie Eyes of Accounn 

 Horfes, particularly what he fays of a CataraSi 2it^'^/k^^'^^'^ 

 page 83 is very far from the Truth ; to wit, that ^{^j.^.^^ 

 the Matter which forms this Diforder is continually 

 falling into the Aqueous or watery Humour, and 

 farther, that we may know a Catarad before it is 

 ripe by rubbing the Outfide of the Eye j for by 

 fuch Means he fays it will ihift it's Place. 



I cannot indeed be furprifed that Mr. Gibfon 

 fhould miilake the true Seat of a Catarad, feeing 

 many greater Men than he have fallen into the 

 like Error, and imagined it placed in the Watery 

 Humour ; whereas nothing can be more abfurd and 

 ridiculous : For, it is now made manifefl that the 



Catarad 



