This notebook covers the period November 1882-June 1883. The entries are by George Gibbs and Thomas P. Conant and relate primarily to chemical experiments. Included are notes and a few drawings concerning experiments to produce marks on paper, probably for an electric meter. There is also material pertaining to storage batteries, carbon filaments, cements for sockets, and mica insulation for dynamo brushes. The last half of the book is by Conant alone and relates to electric meter experiments. The book contains 284 numbered pages.

Blank pages: I, 274-281.

Missing page numbers: 69-72.