This notebook covers the period May 1883-June 1909. Most of the entries date from 1883-1885. All of the entries are by Charles Batchelor The book contains numbered experiments 1301-1403, along with several pages of unnumbered entries. The material relates to electric lamps, dynamos, ore mining and milling, and an electric motor for the Edison-Sims torpedo. The spine is labeled "Expt 1302-." The book contains 284 pages, numbered by an archivist.
Blank pages: 97-98, 101-104, 109-124, 129-146, 157-234, 237-266. Courtesy of Thomas Edison National Historical Park.