This notebook covers the period August 1889-January 1890. There is also one entry from February 1891. Most of the book consists of notes and drawings by Charles Batchelor and by an unidentified experimenter regarding electric railways. Included also are drawings by Batchelor of ore separators and calculations by Batchelor and James W. Gladstone of the cost of battery manufacturing. The spine is labeled "95." The pages are unnumbered. Approximately 70 pages have been used. Courtesy of Thomas Edison National Historical Park.