To Ebenezer Kinnersley, with Associated Papers
MSS not found; reprinted from Experiments and Observations on Electricity, 1769 edition, pp. 397-425.
Accounts from Carolina (mention’d in the foregoing Letter) of the effects of Lightning, on two of the Rods commonly affix’d to Houses there, for securing them against Lightning.
Charles-town, Nov. 1, 1760.

———It is some Years since Mr. Raven’s Rod was struck by lightning. I hear an account of it was published at the time, but I cannot find it. According to the best information I can now get, he had fix’d to the outside of his chimney a large iron Rod, several feet in length, reaching above the chimney; and to the top of this rod the points were fixed. From the lower end of this rod, a small brass wire was continued down to the top of another iron rod driven into the earth. On the ground-floor in the chimney stood a gun, leaning against the back wall, nearly opposite to where the brass wire came down on the outside. The lightning fell upon the points, did no damage to the rod they were fix’d to; but the brass wire, all down till it came opposite to the top of the gun-barrel, was destroyed. There the lightning made a hole through the wall or back of the chimney, to get to the gun-barrel, down which it seems to have pass’d, as, although it did not hurt the barrel, it damaged the butt of the stock, and blew up some bricks of the hearth. The brass wire below the hole in the wall remain’d good. No other damage, as I can learn, was done to the house. I am told the same house had formerly been struck by lightning, and much damaged, before these rods were invented.———

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