IMPROVE D. 145 



vier than the Blood, will add to its Momentum or 

 ftronger Pulfation ; and this is generally fuppoiedas 

 moft proper to open Obftrj6lions or Stoppages in 

 the Blood- Veflels, Glands, is'c. which is very true ; 

 but then if the Stoppage or Obftru6lion proceeds 

 from the over-ftretching or Dilatation of a Blood- 

 Veflel, whether Artery or Vein ; I fay, let whe- 

 ther will be the Cafe, if we give Ci?inabar, or the 

 like, we run the Hazard of quite breaking the Coats 

 of fuch Veffel, from whence many and great Evils 

 might enfue. And here it may be feen of how mo- 

 mentous a Concern it is, rightly to judge of Things, 

 left we precipitately embark ; and by adminiflring 

 Medicines of quite a different Tendency to the main 

 Defign of Cure, we render the Cafe almoft deplo- 

 rable, which before ( by a skilful Man ) might ea- 

 fily have been remedied. 



Mr. T r, the travelling Oculifl, pretends toAnObfer- 



cure a Gutta Serena by convulfmg the Eye, (as he ■*',^^'^f^ "" 



is pleafed to term the Operation ; ) but fuch Pretence y^^^->^ ^td£.' 



is meerly fo, and of French Extradlion j for t]ie tice. 



Mountebanks m France can play forty comical Tricks 



upon the Eyes of their deluded Patients, without 



eafnig tloem of their Dif orders. And really they 



have fuch an Apparatus of Machinery to perform 



the Farce withal, that an underllanding Man would 



be confounded to fee it ; for, not one Infirument 



out of forty, they fhew you, can be fiid to be of 



any real Ufe in performing Operations upon the Eye. 



If a Horfe move his Ears forv/ard, and feem to 

 keep them much in the fame Poilure, as a blind 

 Horfe will do when he is turn'd loofe : I fay, if a 

 Horfe do this when he is led in the Hand, (or run 

 before, as the Dealers Term is, ) and that he Hep 

 a little higher than ordinary v^ith his Feet, 'tis a 

 ihrewd Sign his Eyes are going to decay, or that he 

 has fome Inflammation either upon the outward or 

 inward Coats of them ; and tho' it be an eafy Mat- 

 ter for Gentlemen to judge of the Soundncfs of the 

 outward Farts of the Eye, yet it is very dilTicuIt for 

 H them 



