An account of a very extraordinary effect of lightning on a bullock : at Swanborow, in the parish of Iford near Lewes, in the county of Sussex / in sundry letters from Mr. James Lambert ... and one from William Green ... to William Henly. Read at the Royal Society, May 1, 1776.
- Lambert, James, 1725-1788.
- Date:
- 1776
Licence: Public Domain Mark
Credit: An account of a very extraordinary effect of lightning on a bullock : at Swanborow, in the parish of Iford near Lewes, in the county of Sussex / in sundry letters from Mr. James Lambert ... and one from William Green ... to William Henly. Read at the Royal Society, May 1, 1776. Source: Wellcome Collection.
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![[ *4 ] % driven from it; being often blown upon the ball A, fo as to blacken it with the fmoak. Then charge the phial negatively, and (the apparatus remaining as before) apply the knob of the phial as at firft; and you will then perceive the flame to be blown quite in the contrary direction, viz. from A to¬ wards, and often upon B, as upon Dr. frank¬ lin’s principles of the Leyden bottle, it ought to be. Obferve that, in this experiment it is neceffary to ufe the leaft charge that can be given, juft fufficient to leap the interruption in the circuit ; which ex¬ perience will prefently determine; for if the charge be too great, the flame will be attradled as well as repelled, in the difcharge of the phial; and then, nothing can be infered from the experiment. EXPERIMENT II. Charge a large jar poftively, and infula-te it; then take a long curved wire, pointed, at both ends, and hold it by a glafs handle, fo as to bring one end of the wire, half an inch, from the knob, and the other end of it, to the fame diftance, from the coating of the jar. You will then obferve a fmall luminous fpark, upon the point appofed to the knob of the jar, and a fine pencil, diverging from the lower point, fpreading upon the coating of the jar, which will prefently difcharge it filently. Then charge your jar negatively; infulate it, and apply the wire as before; and the appearances, at the points of the wire, will be diredtly reverfed ; plainly demonftrating the direction of the eleftri- city in the difcharge of the bottle. Another](https://iiif.wellcomecollection.org/image/b30791005_0032.jp2/full/800%2C/0/default.jpg)
