Of Salts in General . 259 
fOjuere, Are there any Valves in the Vef- 
fels of Vegetables, as in thofe of Animals, 
to let the Juices pafs, but hinder their Re¬ 
turn ? 
CHAP. XLVIII. 
Of Salts in General . 
T is I think agreed, that all Bodies have 
their Salts, from whofe different Confi¬ 
gurations and Imprefiions many wonderful 
Changes are effected both in Solids and 
Fluids, in Things animate and inanimate. 
Saline Particles finking upon the Nerves of 
Animals excite the Senfations of Tafle and 
Smell; and as their Forms and Degrees of 
Impulfe are almofi infinitely diverflfied, the 
Senfibility of Pain or Pleafure arifing there¬ 
from mufi be varied almofi infinitely, ac¬ 
cording to the greater or lefs Delicacy of the 
Organs they flrike upon.—It is therefore of 
great Confequence to difcover what we can 
about them. 
The Microfcope fliews, that Vinegar owes 
its Pungency to Multitudes of floating ob¬ 
long quadrangular Salts, each of which, ta¬ 
pering from its xMiddle, has two exquifitely 
fharp Ends. Thefe Salts, being inexpreflibly 
9 minute^ 
