[ H8 ] 
Wood may likcwife be better for this Purpofe, and 
afford more Saif, This is well known to be the 
Cafe of different Kinds of Wood : So our Author 
above-mentioned tells us, he obtained ft of 
Salt out of eight cubic Ells of Poplar, which was 
very fhaip and cauftic s but the fame Quantity of 
Birch afforded only one Pound of Salt, and that 
not fo ftrongj and Fir hardly yielded any at a Ih 
The Way of making Pot-afh above-deferibed' may 
be the more eafily underflood by our People in 
America , for whom this is chiefly intended, as it is 
the fame with their Way of making Lime of Shells, 
the only Lime they ufe in moft Places. Thefe Shells 
they burn to Lime between the Layers of a Pile of 
Wood (inflead of a Kiln) till it is reduced to Afhes, 
in the fame manner as is here dire&ed to be done 
with Afhes, to mgke Pot-afh. The Lime, thus made, 
is reckoned very good j but, as it is impregnated with 
the Afhes of the Wood, and the marine Salt that is 
often in the Shells, it is apt to make the Houfes 
that are built with it very damp in.moift Weather j 
fo that the Water often runs down their Walls in 
Streams j which cannot but be very unwholfome in 
an Air that is naturally clofe and damp: The only 
Way to prevent which would be, to wafh and dry 
their Shells frequently,, and burn them in dry Pine, 
that afford little or no iixivial Salt,. But to return 
to our Purpofe: 
There is another Way of making Pot-afh, 
pradifed chiefly, in England , where they make 
it in the following manner, as I am informed by 
feveral, who have feen it done : 
With 
