( 53 ) 
Probably one Reafon that has occafioned 
fuch different Sentiments concerning Tea, 
is, that tho’ feveral Authors have wrote on 
it, yet they have neither enquired into its 
Principles, nor applied thefe to the Blood , 
"Juices, and Solids of the human Body, 
but taken both upon Truft, to fave them- 
ielves the Trouble of Examination, without 
which they were to expedl no Certainty as 
to its Virtues and Properties. To prevent 
therefore our implicitly following fuch 
Guides, we took the above feparated Prin- 
ciples of Tea, and found that all its Infu- 
fions, of a moderate Strength, were reftrin- 
gent 5 and that the greater or leffer Degree 
of their Reftringency, is in proportion to 
the Strength or Weaknefs of the Liquor 
drunk, and the Springinefs or Laxnefs of 
the Drinkers Fibres. But tho’ the Infufions 
of all the Teas have an Aftringency, yet 
fome have it in a more eminent Degree 
than others, for the Bobeas have it in a 
lower than the Greens ; common Green has 
it more than Hyjon ; which is the Reafon 
that where bracing and cleanfing (Deter- 
gents) are wanting, common Green is befl; 
where more fmooth and lubricating, Bobs# 
E 3 challenges, 
