IMPROVED. i49 



between the Hogfhead and the Pifs-pot : Of (o 

 little Ufe are they to the reft of Mankind. 



The Obftrudtion of the Ureters by Gravel, or 

 any other foreign Matter, caufes a Suppreflion of 

 Urine oftentimes very fatal ; for it lyes out of the Reach 

 of manual Operation. Therefore, when the Cafe 

 is thus, moft or all the Evacuations are requilite ; 

 and ^rj}. Bleeding, altho' the Horfe has not any 

 Fever, befides a fymptomatic one. For, from Pain 

 his Blood miift acquire an exalted Motion ; I fay, 

 for this Reafon, Bleeding Ihould be performed in 

 the Beginning of the Difeafe, in order to give more 

 Room for the offendmg Matter to pafs along the 

 Ureters. 



I muft confefs I have been often perplexed to find 

 out, how or in what Manner it is poifible for fuch 

 large Pieces of Stone or Gravel to pafs from the Kid- 

 neys along the Ureters to the Bladder,, when I have 

 confidered the Paffages as they are very nar- 

 row, and,, in feveral Places, much more contracted 

 than in others :- But that it is really fo, is every 

 Day's Experience, and bell underflood by thofe, 

 who are fo unhappy as to fufFer under excruciating 

 and intolerable Gravel-Pains ; for thefe Unfortu- 

 nates are truly fenfible of the Progrefs which any 

 Piece of fabulous Concretion makes from the Kid- 

 neys along their Back and Flanks till its Arrival in 

 the Bladder. And then for the moil part is is, that 

 their violent Strainings to vomit ceafe, and nothing 

 farther is to be feared, but the Trouble of forcing the 

 Piece of Stone through the Urethra by the Fenis or 

 Yaxd. 



But it often happens, that fuch large Stones come 

 by the Ureters from the Kidneys, that when they 

 are even got into the Capacity of the Bladder, the 

 Perfon is not able to pifs them away : V/hich to me 

 is furpri2i'rio- ; feeing,, as I juft now hinted, the 

 Ureters are fo narrow, and the Neck of the Bladder 

 fo large. However, there is no Doubt of it, but 

 the b.eil V/ay to get rid of thefe. Stones, when they 

 M 5 are 



