Chap. VII. Of a Jimple contmned Fever 31; 



and Midriff', and moreover in the Lungs themfelves, is the 

 Caule of !he heaving of the Flanks, whereby the Lungs 

 are deprefs'd too clofe on all Sides, upon which the Pafla- 

 ges of Refpiration become obftruded ; whereas in other 

 Cafes, the fame Signs may be exhibited from the want of 

 Spirits, by which means the Adion of the Mufcles, which 

 elevate and deprefs the Thorax^ muft be hinder'd ; but 

 this may be eafily diftinguifh'd, by an Infenhbility and 

 Liftlefnefs to Motion ; as may alio an Inflammation of 

 the Lungs or Pleura^ from the manifeft Signs of infup- 

 portable Pain, as ihall be obferv'd in its proper Place. 



Fifthly^ Albeit Pain is a Sign common to feveral kinds 

 of Fevers, yet it is more violent in this than in any other, 

 as the Pain proceeds from an over-plenitude and fulnefs of 

 the Veflels ; and therefore when we obferve a Horfe apt 

 to flirink or ftrike, as often as any one comes near him, but 

 efpecially upon offering to touch his Back, we may fuppofe 

 this to be occafion'd from Pain in the Back and Loi.ns, 

 arifing from an over-diftention of the Aorta, or great 

 Artery, that Veflel lying open and unguarded, and hav- 

 ing no Itore of Mufcles to inviron and fupport it. The 

 Farriers oftentimes, in this fort of Fever, when they obferve 

 a Horfe unwilling to have any one lay Hands on his hind 

 Parts, believe it to be the Sign of a fway'd Back, and make 

 their Applications accordingly. But we fhall have an 

 Opportunity of putting them right in this Particular here- 

 after. 



Lajlly, The conftant Watchfulnefs and Reftlefnefs, 

 which is fo obfervable, and feems, in a great Meafure, pe- 

 culiar to a fimple Fever, is alfo the Refult of a very great 

 Rarefaction and Thinnefs of the Blood ; th^ animal Spirits 

 will therefore be the more eafily feparated from fo loofe a 

 Texture, and the Veflels, being at the fame Time' full, mull 

 therefore prefs upon the Nerves, caufing a continual flux 

 and reflux of the faid Spirits, from whence muft undoubt- 

 edly proceed Watchfulnefs and Reftlefnefs. But in Fe- 

 vers of another Kind, thefe Signs feldom or never go toge- 

 ther ; but if a Horfe be watchful, he is, perhaps, at the 

 fame time fluggifli and heavy ; or if a Horfe be reftlefs, 

 and fometimes in a moving Pofture, he does not continue 

 long fo, but becomes dull and unadive by Intervals, efpe- 

 cially if the Blood is of unequal Fluidity ; for in fuch a 

 Cafe, when the vifcid and tenacious Parts are got into the 

 fmall hair -like Velil-h of the Brain, there muft at that time 



be 



