4ly, The former earthquake that happen'd at _Grantham_, _Spalding_, _Stamford_, (which towns lie in a triangle) took up a space which may, in gross, be accounted a circle of 30 miles diameter: the center of which is that great morass, called _Deeping-fen_. This comprehends 15 miles of that 30, in diameter: and where probably, the electrical impression was first made. Much the major part of _Deeping-fen_ is under water in the winter time; underneath 'tis a perfect bog. Now it is very obvious, how little favorable such ground is, for subterraneous fires. In the second earthquake, not only this country was affected again, but likewise a much larger space of the same sort of fenny ground, rather worse than the former: all _Donnington-fen_, _Deeping-fen_, _Croyland-fen_, _Thorney-fen_, _Whitlesea-fen_, _Bedford_ level, and the whole extent of _Ely-fen_, under various denominations. This country, under the turf, abounds with subterraneous timber of all sorts; fir, oak, and brush-wood: and stags horns. Now and then they find a quantity of hazel nuts, crouded together on an heap. I have some of them. This is a matter common to all boggy ground over the whole globe, Such things are the ruins of the _antediluvian_ world, washed down from the high country where they grew, were here lodg'd upon the subsiding of the waters, and by time are o'ergrown with the present turf. They that seek for any other solution of this affair, than the universal _Noachian_ deluge, want to account for a general effect, by a partial cause: and shut their eyes, both to the plain history of this matter; and to the infinite, notorious demonstrations of it, from fossil appearances. 5ly, All this country, tho' underneath 'tis a watry bog, yet thro' this whole summer, and autumnal season (as they can have no natural springs in such a level) the drought has been so great on the superficies, that the inhabitants were oblig'd every day, to drive their cattle several miles, for watering. The drought was greater, than has been known in the memory of any one living. This shows how fit the dry surface was, for an electrical vibration. And we learn from hence, this important particular, that it reaches but very little below the earth's surface. Mr. _Johnson_, in another letter which he wrote to me concerning the second earthquake observ'd at _Spalding_; says upon this occasion, he was obliged to scour his canal, and deepen it: that they came to a white, quicksand; which afforded to all the neighbourhood, excellent water in plenty.