[ 373 ] 
degrees, and in time, to affedt the whole Slope of 
the Land : And as the inferior Strata yield Coal and 
Iron-Ore, their Fermentation may produce this Va- 
pour, and force it to afcend with Violence through 
the Chinks of the Earth, and give the Water the 
great Motion it has. This might be obftrudcd in 
one Place by the foremention'd fubftding of the 
floping Bank, and might afterwards find a Vent in 
another $ in like manner as it happen'd at Scarbo- 
rough Sp aw, a few Years fince. 
If thefe Hints fhould be any Amufement to you, 
or be the Means of fetting any more able Perfon 
upon further Inquiries, and giving a better Account 
of them, I have all that is intended by 
Jan. 18. 1746. Tour humble Servant, 
Cha. Mafon, 
VII. Part of a Tetter from Mr . John Brown- 
ing, of Briftol, to Mr . Henry Baker, 
F.R.S. dated Dec. u. 1746. co?7cerning 
the EffeSl 0/* Electricity 077 Vegetables. 
Read Jan. 22. Y TAving an Operator at Brijlol with a 
good eiedrifying Machine, I was 
defirous to eledrife a Tree, and therefore fent him 
the following for that Purpofe; viz . Laurujlinus , 
Leucoium majus fore pleno ferruginco, and Stoechas 
citrina Cretica. Thefe were not chofcn with any 
Pefign \ 
