This is one of six notebooks that were probably begun on January 10, 1881. It contains notes by Charles Batchelor on gas lighting, which appear to be related to Edison\'s proposed book on electric light and power. (See Menlo Park Notebook #184). There are additional entries by Batchelor, along with entries by Edison and occasionally by other members of the laboratory staff. Included are notes, calculations, and drawings relating to meters; and drawings of dynamos, voltage regulators, and other electrical devices. The book contains 284 numbered pages.

Blank pages: 78-81, 116-119, 140-143, 146-241, 252-259, 262-271.

Missing page numbers: 281-282.