Chap. L. Of Tumors, Inipoflhtimcs, 5cc. 157 



when any part happens to be tmrt or weakened by external 

 Accidents, whence being unable to make an equal Refifl- 

 ance with the reft of the Body, it will at length receive 

 fuch a Qtiantity of Fluid as will raife it into a Tumor. 



The Writers of Surgery, in all Ages, carefully following 

 one anothers Steps, have reduc'd all Tumors to four gene- 

 ral Kinds, viz. into the Natural, Encyfhd., Critical, and 

 Malignant ; and under thefe they have rank'd all the other 

 Species. But this Divilion is neither in itfelf very accurate, 

 nor rightly fuited to our Purpofe, as our Burir.els is with 

 Horfes, we fhall therefore reduce them to the j , q- 

 Natural and Ency(led only. Of the firft ^ucible to the 

 Kind are all Boils and inflam'd Swellings; Natural and 

 and, in fhort, whatever Tumors are form'd Encyjhd, 

 originally by the Fluids dillending their pro- 

 per Veflels, whether they be critical or malignant, for thefc 

 differ only in Degree from other natural Tumors. And of 

 the fecond are all ihofe that are form'd within membranous 

 Cyjls or Bags, as l^ens^ Jnburies, and fome Sort of Figs^ 

 and other Excrefcences that grow on the external Parts of 

 the Bodies of Horfes : And this agrees the belt with what 

 thefe Authors here obferved with refpedl to the Formation 

 of all Tumors by Fluxion and Congefiion. 



Thofe Tumors that are large, and come Ahfceffet and 

 to Suppuration, and have Matter gather'd hnpofihumes. 

 within them, whether they be Natural or Encyfted, are 

 term'd Impojlhu?nes ; and wlien the Matter is lodg'd within 

 the common, but chiefly the larger InterlVices of the Body, 

 as thofe Furrows or vacant Spaces between the Mulcles, or 

 between the Mu Teles and Bonc>, they are then called Ab- 

 fcejfes ; but all Abfcefles, and moft kinds of Impolthumcs, 

 are form'd of natural Tumors. 



But we fliall confiderall Tumors, whether T'tmors con/i- 



Natural or Etuyjhd, in the followintr Order, '^"'^ '^'^th re- 



viz. Fir /I, With regard to their Magnitude fP''"^ J'/'^^''" 



and Situation, there being little to belearn'd '^-~^'f/«'^''<'»» 

 r .1 • r-- I /-> 1 r • 11 • and Matter. 



from their V igure and Colour, efpecially in 



Horfes. Secondly, With refpeft to the Matter whereof 

 they are form'd. And Lajlly, We fhall lay down fome ge- 

 neral Rules to be obferved in the Cure. 



i^^>/7, When a Tumor happens to be fituated upon any 

 Parts where there is no depth of Flefh, as on the Nofe and 

 upper part of the Face, it will not be apt to grow large ; or 

 if it be featcQupon the Skin orficfhy Pannicle, and free from 



the 



