Sentence:  All <WSD>Nervous</WSD> Diſtempers whatſoever, from Yawning and Stretching, up to a mortal Fit of an Apoplexy, ſeems to me to be but one continued Diſorder, or the ſeveral Steps or Degrees of it, ariſing from a Relaxation or Weakneſs, and the want of a ſufficient Force and Elaſticity in the Solids in general, and the "Nerves" in particular, in Proportion to the Reſiſtance of the Fluids, in order to carry on the Circulation, remove Obſtructions, carry off the Recrements, and make the Secretions. 
Meaning of the word marked with <WSD> tags:  Relating to or affecting the nerves.