English

Conjectures on the cause of thunder

Discusses Franklin's experiments · Boston Public Library (Rare Books Department) copy: ex libris (bookplate) Samuel W. Pennypacker, William Duane, Jr.; contains ms. inscription by former owner William Duane, Jr., a great-grandson of Benjamin Franklin, noting that the ms. partial table of contents on the verso opposite the title page is in the hand of Franklin, a former owner; inscription of author's name in antique hand appears at the end · Bound volume contains: 1. Conjectures on the cause of thunder -- 2. The philosophy of earthquakes, natural and religious -- 3. Sir Isaac Newton's æther realized -- 4. Lettre electrique sur la mort de m. Richmann · Boston Public Library (Rare Books Department) copy bound in contemporary half calf over printed and embossed paper boards

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