Of a BROKEN-WIND. 69 



The reafon why this diforder becomes Why hor- 

 more apparent at this age, may be, that J5^ """S 

 a horfe comes to his full flrength and ^^^^ 

 maturity at this time: at fix he com- grow 

 monly fWifhes his growth in heighth ; broken- 

 after that time he lets down his belly and w^"'^^^* 

 fpreads, and all his parts are grown to 

 their full extent ; fo that the prelTure on 

 the lungs and midriff is now more in- 

 creafed. 



But how little weight foever thefe rca- Obferva- 

 fons may have, repeated diffedlions have ^^°"- 

 given ocular proofs of a preternatural 

 largenefs, not only of the lungs of brok- 

 en-winded horfes, but of their heart and 

 its bag ; and of the membrane which di- 

 vides the cheft; as well as of a remarka- 

 ble thinnefs in the diaphragm, or mid- 

 rift. 



This difproportion has been obferved The part* 

 to be fo great, that the heart and lungs, f ^^^^^ ^^ 

 have been almofl: of twice their natural Jjnded' 

 fize, perfedlly found, and without any horfes. 

 ulceration whatever ; or any defe(5lan the 

 wind -pipe or its glands. 



Hence 



