( 243 ) 
Warmth. It is worfe in Youthhood than in 
Manhood and old Age ; for in the fird it 
heats the Body too much, gives the Solids 
too great Play againft the Fluids, whereby 
their Globules are too much broke, and 
driven into too fmall Divifions of Veffels ; 
hence Danger of Fevers or Inflammations. 
All Inflammations and Ulcerations of the 
internal Thorax, as Lungs, Mediadinum, 
Midriff, Pleura, &c . or of the Stomach, 
difcharge Smoaking, becaufe it giving a Sti- 
mulus to the Solids, difcompofes the Quiet 
which is abfolutely necefiary to the Cure of 
thofe Difeafes ; it alfo over-heats the Blood, 
increafes its Motion, and its Sulphur and 
Acrid tend to thicken it where its next to 
Stagnation already in overloaded fmall Tubes, 
whofe Tone is almod pad Recovery. Such 
wbofe Mouths are often infeded with too 
great Heats, Inflammations, and Pains, mud 
not fmoak, for the Salts of the Tobacco, 
and Heat of the Smoak, will irritate and 
exafperate that Diforder. Such as are fore 
troubled with condant or often Third, mud 
likewife forbear it for the excretory Dudts 
of their falival Glands, being either naturally 
too drait, i. e. their Diameters too fhort, 
they difcharge not a necefiary Quantity of 
R 2 Saliva 
