to6 The An of Farriery 



the Eye a thin Confiflence and of a Spirituous Nature, for 

 ^^?fi ft^' it will not congeal in the greateft Froft. And this 

 the A que- evinces the Neceffity of a continual Supply of this 

 ou.s cr ' Humour, which it is manifefl it hath ; becaufe if 

 Watery the Cornea or Horny Coat be pricked, and this 

 Humour. Humour fqueezed out, it will be reflored again in 

 Hiimour of ^^^ ^^ twelve Hours Time. And I have often ob- 

 aSpirituousfcrved this in fighting Cocks, which after they re- 

 Nature, ceived a Prick with the other's Spur thro' the horny 



t^oi^'on"^' ^^^^' ^^^^^ ^^^ ^°"^^ ^^^^ ^^^ ^"^ hollow and be 

 Cock's ^^^ ^^^ ^^^ Battle ; and altho' one would be hardly 

 £>e. perfwaded that fuch Cock would ever fee of that 



Eye i yet it has the Morning following been full 

 and plump again j and in two or three Days after- 

 very well and found. But then I mull obferve that 

 when the Spur happens to penetrate fo deep as to 

 wound the Cryftalline Humour, then, that Humour 

 becomes heated and fo altered as to hinder the Rays 

 of Light from paffing thro', fometimes appearing of a 

 Pearl-Colour, at other Times ofthc Colour of ruily 

 Iron or Greenifh j and in thefe Cafes the Cock is faid 

 to have a Glafs Eye, which is in EfFed the fame as to 

 be blind -of that Eye : For, altho' fuch Creatures, 

 25 Horfes, i^c. which have Glafs-Eyes may dillin- 

 guifh Light from Darknefs, yet they cannot diftin- 

 guilh Objeds, fo as to Be of any real Service to 

 them ; and what is called By the common People a 

 Glafs-Eye, is the Cryftalline Humour altered from 

 a Tranfparency to that Degree, that it will not fuf- 

 fer the Light to pafs thro' it, and is in other Words 

 a Glaucoma or CafaraJI ; which Diforder I Have 

 ieard the prefent Learned Oculift to Her Majefty 

 affirm, he could either give to his Patients or cure 

 them of it, as he thought fit ; and that before he 

 learnt this Art, he had blinded 500 ; which Rela- 

 tion I am the more induced to credit, fmce I have 

 perufed his late Book upon the Diforders of Sight, 

 which I pronounce the moil confummate and finilh'd 

 Piece of Nonfenfe and Jargon that ever I beheld : 

 And really, I thought I fhouW have fglit my Sides 



when 



