r 204 3 
ferene ; and that thunder is, drictly fpeaking, only- 
one of its modifications, which renders it more fenfi- 
ble to us. 
The Abbe Nollet’s treatife contains nine letters 
fix of which are addreded to Mr. Franklin, one to 
Mademoifelle Ardinghelli, who, when only fixteen 
years old, tranfiated Dr. Hales’s treatife of Haema- 
datics into Italian, and added thereto fome very in- 
genious remarks ; one to Mr. Jallabert of Geneva, 
and one to Mr. Boze of Wittemberg : To thefe are 
added fome experiments in eleCtricity, made in fup- 
port of opinions, laid down in this work, in the pre- 
fence of Meffieurs Bouguer, de Montigny, de Courti- 
vron, d’Alembert, and le Roi, who were appointed 
by the Royal Academy of Sciences for that purpofe. 
In the firft letter our author gives his correspond- 
ent Mademoifelle Ardinghelli an account of the dis- 
coveries in electricity in the year I7y2 ; among which 
he takes particular notice of the experiment made on 
May 10, at Marly-la- ville, in confequence of Mr* 
Franklin’s hypothefis; wherein pointed non-eledrics, 
fupported by eleCtrics per Je, gave manifeft figns of 
eleCtricity during a thunder- dorm. This experiment, 
in the letters to Mr. Collinfon, Mr. Franklin had 
propofed, but, as far as may be judged, had not then 
carried into execution. The experiment of Marly- 
la-ville was foon after verified by Dr. le Monnier at 
St. Germain-en-Iaye, who found further, fird, that 
the like effeCts were produced, whether the iron rods 
were pointed, or notj and that it was indifferent* 
whether their pofition was horizontal, or not. Se- 
condly, that thunder eleCtrifed not only iron, butalfo 
wood* 
>#* 
