Add to this, that Mr. Eeles, in page 140. tells us, that himself has passed thro’ clouds resting on the sides of mountains. Ought not those clouds to have immediately discharged their electricity, and fallen? And common experience may remind us, that any cold bodies will condense vapour, whatever be their electric properties. So mirrors, or the glass of windows, in damp rooms, are most frequently found covered with dew; which, of all other bodies, ought most to be exempted from collecting vapours supported by electricity, as they are the least capable to attract or draw off that æther. From all which, well examined, I am persuaded, gentlemen, you will be induced to conclude, that tho’ clouds may sometimes possess an accumulation of electricity, yet that this is only an accidental circumstance, and not a constant one; and thence can have no possible influence either in the elevation or support of them. I am, GENTLEMEN, Your very humble Servant, Erasmus Darwin. Litchfield, March 23. 1757. [Illustration: _Philos. Trans. Vol. L._ TAB. VI. _p. 255_. _The grey Coot-footed_ Tringa _shot near Halifax in Yorkshire (January 1757) and Presented to me by Mʳ. Thomas Belton Florist of Worley-clough in Yorkshire. Drawn from nature of the Figures of Life by Geo. Edwards in Feb.⁴ 1757._] XXXI. _An Account of new-discovered Species of the Snipe or Tringa: In a Letter to the Rev._ Tho. Birch, _D.D. F.R.S. from Mr._ George Edwards, _Librarian of the College of Physicians_. [Read May 5, 1757.] SIR, I TAKE the liberty to lay before you the figure and description of a new-discovered species of the snipe or tringa kind, which was lately shot at Sowerby-bridge in Yorkshire, and sent to me by Mr. Florist of Worley-clough, near Hallifax in the same county. If the account, that follows, shall be thought by you deserving to be communicated to the Royal Society, the real bird, which I have preserved dry, shall be produced at the same time.