KA. 212
ELECTRICITY--EARLY WORKS TO 1850.
Franklin, Benjamin, 1706-1790.
Experiments and observations on electricity, made at Philadelphia in America, To which are added, letters and papers on philosophical sub- jects, The 5th ed, London, Printed for F, Newe bery, 1774.
v, 514 pe illus., plates (part fold.) 24cm.
FOR OTHER EDITIONS see AUTHOR
1. Electricity—-Ferly works to 1850. 2. Phy- sics—Collected works,