This notebook is a continuation of N-00-01-23. It was used during August 1900. The book contains notes by Edison regarding the use of copper, zinc, or nickel in storage batteries. Near the end of the book is a one-page entry by an unidentified experimenter relating to iron ore separation. The front cover is labeled "Started Aug 21st 1900 (2)." The pages are unnumbered. Approximately 130 pages have been used.