26 The Farrier'j Ne'i:; Guide. Chap. VI. 



But in all Fevers whatfoever^ it is manifeft, that the va- 

 rious Changes made in the Blood, whether thefe are caufed 

 by an over Rarefadion and Thinnefs, or an over Thicknefs, 

 mull afibcl the Secretions; but in thofe that are complicat- 

 ed, they muft occafion Tome of them to be too liberal, while 

 others are too fparing; and may alio occafion one Secretion 

 at one time to be too open, and at another time too fparing. 

 „ , « And thus far we may here advance con- 



tions mav be af cerning the Secretions, that in all fuch Fevers 

 feiledin Fevers, ^s proceed from an over Rarefadion, the fe- 

 rous Part of the Blood, being render'd more 

 than ordinary thin, muft needs go off' in too great a Quan- 

 tity, while the grofler Parts may be detained by the larger 

 Vefl'els, which compofe the folid Parts, prefling upon thofe 

 that are fmaller, efpecially towards their Entrance into the 

 Glands ; fo that by virtue of a fuperior Weight in the larger 

 "Vefl'els, nothing but the thinner Parts of the Serum can pafs 

 through them ; and that Expence of the thinner Parts of 

 the Blood, if it is not flopped in due Time, will leave the 

 remaining Mafs too thick, whereby other Symptoms will 

 be engender'd, and fuch as are common to Fevers of a more 

 complicated Kind : And when fuch a Change happens, 

 the Blood miuft lofe its regular and uniform Motion, and 

 the Difeafe will no longer conftitute one continued Fever, 

 of one Period only, but admit of divers Periods. 



Now when fuch a Change happens in any fimple and 

 continued Fever, or if this has been the State of the Fever 

 from the Beginning, the Secretions muft be irregular ; for 

 feeing the Entrance into all the Glands is not the lame, but 

 that thefcPaffages are of divers Capacities and Sizes, the Parts 

 of th.e Blood Vind Serum not being fufficiently communicated, 

 2nd render'd fo fmall as to enter inio the fmalleft fecretory 

 Offices, muft therefore, when they meet with Oppofition, 

 :ind are deny'd Admittance into them, enter in an over great 

 Qiiantity into thofe that are large enough to receive them. 

 And thus we may eafily form an Idea how feveral Ferments 

 raay be engender'd in the Body during the Continuance of 

 fuch Fevers, efpecially if it be cojifidcred, as was obferved 

 in another Place, that a Liquor confifting of but few Prin- 

 ciples, may, by their various Combinations, produce a great 

 Variety of different Liquors. And therefore lince the Blood 

 is a Fluid confifting of different Principles, and undergo* 

 ing fo many different Changes, while its Secretions are thus 

 diltemper'd and irregular, it may, po doubt, be fo fermenx- 



«d 



