A Letter, in Latin, Concerning Electricity by Mr. Thorbern Bergman - 1760

Description

Read before the Royal Society on November 20, 1760,
A Letter to Mr. Benjamin Wilson, F.R.S. concerning Electricity; from Mr. Thorbern Bergman
was written in Latin and seems to discuss a correlation between electricity and the aurora borealis. Someone competent in Latin may find other meanings in the text.
The item is a First Edition, extracted and disbound from The Philosophical Transactions of the Royal Society, Vol. 51, For the Years 1759 & 1760, pages 907-909, plus one extended plate. This volume was published in 1761. The illustrations above show the first page of the paper plus the figure accompanying the text.
Thorbern Olaf Bergman
(20 March 1735 – 8 July 1784) was a Swedish chemist and mineralogist noted for his 1775 Dissertation on Elective Attractions, containing the largest chemical affinity tables ever published. Bergman was the first chemist to use the A, B, C, etc., system of notation for chemical species. In 1764, Bergman was elected a member of the Royal Swedish Academy of Sciences. In April, 1765 he was elected a Fellow of the Royal Society of London  [Wikipedia]
Benjamin Wilson
(June 21, 1721 – June 6, 1788) was an English painter, printmaker and scientist (natural philosopher). As a scientist he opposed Benjamin Franklin's theory of positive and negative electricity. Instead, Wilson supported Isaac Newton's gravitational-optical ether, which he supposed to differ in density around bodies in accordance with their degrees of electrification. Wilson also opposed Franklin's theory of pointed lightning rods, holding that blunt conductors performed better than pointed ones. [Wikipedia]