Chap. XV. OftheStaverSi or Staggers. 55 



has Tuch Symptoms without a Fever, and if it be obfeiv'd 

 that he often puts his Head againft the Stall or Manger, it 

 will be very proper to have Recourle to fome Remedy ; 

 for which Purpofe we recommend Bleeding, Purging, and 

 Rowelling, as alfo the Ufe of Chewing 'BalU^ &c. 



CHAP. XV. 



Of the StaverSj or Staggers. 



N order to the Knowledge of this Di- jjpoplexv 

 ftemper, it will be necefl'ary firft of all to 



I 



enquire into the Nature of an Apoplexy and Vertigo^ for with- 

 out fome Infight into thefe, the other can never be rightly 

 underftood. 



Firft then, As to an Apoplexy^ That is ufually defin'd a 

 Privaucn of Senfe and Motion, excepting only a weak 

 and languid one in the Heart and Breaft ; and this pro- 

 ceeds either from a Caufe without the Veflels, viz. when 

 the Blood or any other Fluid happens to break out of fome 

 Veflel within the Brain, or when there happens to be pre- 

 ternatural Bones or Tumours bred and contained within 

 the Skull, or any other extraneous A/[atter that may in any 

 Sort prefs upon the foft Subflance of the Brain, caufing 

 thofe deadly Diforders. But this is a Species that is in- 

 curable, and for the mofl Part feizes fuddenly, without 

 any foregoing Tokens and Warnings : But the other pro- 

 ceeds from fome Caufe within the VeiTels, whereby the 

 Arteries, which are woven into the Pia Mate7\ or inner- 

 moft Membrane of the Brain, or that Part of it which in- 

 volves the Trunk of all the Nerves, becomes over-much 

 extended ; fo that by the Preil'ure of thefe Vellels upon 

 them, Senfation is intercepted, and Motion loft. 



Thus, in an Apoplexy^ Senfe and Motion are in a Man- 

 ner quite loft, becaufe of the Prellure that is made upon the 

 Origin of all the Nerves that arife from the t^ ,. 

 Head; But in 2i Vertigo, Objects that are 

 at Reft, appears as if they were turning round, and by that 

 Means occanon any Creature to reel and ftagger : And this 

 proceeds from the Vibrations and Tremors of the Optick 

 Nerve, whereby the Images falling not directly, but fuccef- 

 fjvely upon the different Pur.s of the Retina., an Objed that 

 is ^\. ^N.eltj v/iU therefore nppear as if it v.'as taming round ; 

 M 4 and 



