IMPROVED. pi 



Heart is a Mufcle that has no Antagonill, and con- 

 fequendy it requires a lefs Qunntity of Nervous 

 Muid to continue its Motion, tlis.n other Mufcles 

 deftined for the Motion of the Limbs. Therefore, 

 if the Caufe hindering the Undulations of all the 

 Nei-ves were fuch, that no Juice could flow thro' 

 the Nerves, the Heart itfelf would ceafe from 

 Motion, and Deatli enfue : But if the Caufe be not 

 fo powerful, as to take away all the Motion of 

 the Fluid through the Nerves, but fo far only re- 

 fills their Dilatation, that but a very little Fluid 

 can pafs through them, not fufficient to inflate or 

 blow up thofe Mufcles which have AntagoniUs j I 

 fay, in this Cafe, thofe Mufcles only will be con- 

 trafted, which require the leaft Quantity of Spirits, 

 and fuch no Doubt is the Heart. 



The Impediment to fuch due Undulation of the The Caulc 

 Nervous Fluid, is geiierally a Repletion or Over- and Cure. 

 fulnefs, and this indicates Medicines which are 

 called Evacuants, as alfo Bleeding, ^c. And in 

 my Opinion, Bleeding mufl: be the premier Refort, 

 and is moft likely to do Service in moft Difeafes 

 ef the Brain : And this I am treating of, is a 

 very common one in Horfes, as well as the 

 Vertigo or A^poplexy in Man. 



The famous Bartho!h:e, calls the Jugular Veins E.trtho'we 

 jipoj)IeJfzc(ef from an Opinion of their being parti- ^^^^^ ^^-'^ ^^ 

 cularly concerned in tliat Diftemper. But I ^ni [J^yl.y^l^''' 

 very well convinced, that there is little Difference ^popuniiA, 

 wherefoever you bleed, either Man or Horfe : Since 

 it is plain, that the Benefit which accrues to the 

 Patient, proceeds fi-om the Quantity's being lef- 

 fened ; and not fo much from the fooliflily fuppofed 

 conceit of Revulfion ; which Term as it is yet re- 

 tained, I judge it may not be improper in this 

 Place, to ihew how far it may be of Ufe in Phlebo- 

 tcmy or Blood-letting. 



The Word Phlebotomy, derived from the G^'"^^-^ Phleboto- 

 (r>J-X, a Vein, and t'iuvco, feco, to cut, fignilies myexi^tain- 

 Blood-Ietdng j and to give due Light into this ^^• 



Af&jr, 



