1 8$ The YhRKi^K's New Guide. Chap.L. 



the fubjacent Mufcles, it cannot be ordinarily expeded to 

 grow to a Bignefs, there being no fufficient Source for its 

 Subftance and Increafe, as we have obferv'd in a preceeding 

 Chapter ; and asihofe Httle Tumors very often fpread them- 

 felves over divers parts of the Body at once, being thrult out 

 in that manner, becaufe of their Contiguity with the Skin, 

 which in fome delicate Animals, is able to give little or no 

 Refiftance, they are therefore the more unlikely to alter their 

 Size, lince it is very reafonable to fuppofe they make a Re- 

 vulfion from each other, whereby the Matter, which might 

 have otherwife been difcharg'd by the common and ordinary 

 Secretions, or caft off in one large critical Tumor, is eva- 

 cuated by a vaft Number of Tubercles and little Hurdles. 

 But a-lbeit Tumors thus lituated do not ordinarily grow to 

 any great Size, yet as all animal Bodies are made up of Vef- 

 fels which are capable of Extention and Dilatation, when 

 there is a continual Addition of frefti Matter, therefore fome 

 Tumors that are very fuperficially fituated, and have but a 

 fraall Beginning, will increafe to a very large Bulk. 



And it is from hence we may account for IVenSy JnburieSj 

 and all fuch other Excrefcences, viz. when fome Duplica- 

 tureofa Membrane or fmall Veflel is, by an Accumulati- 

 on of Matter, protruded and thruft forth beyond the com- 

 mon Limits of a Horfe's Body, yet in fuch a Manner as 

 gives no great Difturbance to the Circulation of the Fluids 

 that are within ; therefore, as they are not apt to caufe 

 Pain, they will therefore grow in proportion to the quantity 

 of Matter which is empty'd into them } and Nature lb far 

 encourages their Growth, as to enlarge thofe Vellels which 

 nourifli the Skin, and other Integuments wherein that Mat- 

 ter is contained. 



But it is quite otherwife with thofe Boils and Tumors 

 that are feated in the flefliy and mufcular Parts ; for as they 

 occafion violent Pain by ftretching out the Veflels and Fir 

 bres, and as the Pain caufes a conliderable Afflux of Mat- 

 ter, therefore any Swelling form'd that Way, muft have a 

 fpeedy IlTueand Determination, by the burfting of the faid 

 Vefiels ; and it likewife cuts oft' the Communication of the 

 Blood in thofe Parts, and therefore it will become a run- 

 ning Sore, until there is a Re- union of the Parts that were 

 lore and disjoined. 



Now all fuch Swellings are ufually larger or fmaller, ac- 

 cording as their Situation is more or lefs in the thick Flefli, 

 and according to the Multiplicity and Size of the Veflels 



which 



