C 5 r 4 ] 
in iifdem Societatis noftrae Conmentariomm tom. IV, 
jam firfius didtum eft. 
L. Experiments in Ele&ricity : In a Eetter 
from Father Beccaria, Profejfor of Expe- 
rimental Philofophy at Turin, to Benjamin 
Franklin, L. L. D. F. R. S. 
Benj amino Franklin viro de re electric a merittjjimo 
Joannes Baptijla Beccaria ex fcholis piis S.P.D. 
Read Feb. 14, ^Ofpitem ex America Londinum te 
appuliffe gaudeo, vir praeclarif- 
fime. Offero tibi de motibus eledtricis, qualem expe- 
rimentis excudi, hypotheftn : partior banc in duas 
partes, quemadmodum ipfa poftulare videtur motuum 
hujufmodi differentia: ago parte prima de acceftioni- 
bus, de difceffionibus dico parte altera. 
2. Et continuo univerfam de acceftionibus pertrac- 
tationem meam ita paucis comprehendo: t£ Quiim 
“ ignis eledtricus copiofior in corpore altero vi ex- 
££ pandendi fe ad aequalitatem trajicit in alterum, 
££ partem interjedti aeris dimovet e loco pro majore 
££ fua copia majorem : fit inde, ut aer a tergo cor- 
££ poribus adjacens deficiente fulcro aeris intermedii 
££ ruat verfus ipfum medium locum ; ruit vero non 
<£ circumeundo corpora, quae via eft longior, atque 
££ impedita abs igne profluente, fed ipfa trudendo a 
££ tergo : hac aeris trulione accedunt corpora inaequa- 
£c liter eledtrica; dum accedunt, accelerantur, quia 
££ pro acceffione majore copiofior ignis interfluit, co- 
££ piofior 
