Benjamin Franklin's lightning rod experiment...

THE GENTLEMAN'S MAGAZINE, London, July, 1752  An inside page has an article titled: "A Cut and Description of a Machine, easily constructed, for making the Experiment by which Franklin's new Theory of Thunder is demonstrated" with descriptive text showing his this experiment works. Each piece of the illustration is identified as well. A great and early contemporary piece on Franklin's experiments with electricity. Also included in this issue is a print of seashells & coins, as well as a full page print: "Long Meg and Her Daughters, a remarkable ancient fort...".
The bird & plant print is lacking.
The complete 46 page issue which includes a full title/index page with an engraving of St. John's Gate.  In great condition with uncommonly wide margins, measuring 5 1/2 by 8 1/2 inches.