This notebook covers the period January-December 1892. It contains transcriptions by Arthur E. Kennelly of material from the rough record books used by experimenters in the Galvanometer Room. There are notes, drawings, tables, and calculations regarding a variety of electrical experiments, including tests of meters, cable and cable insulation, batteries, and dynamos. In addition, there are extensive notes and design drawings relating to motors for phonographs, rock drills, and fans, including an alternating current fan motor design. Also included are notes regarding the alternating current electric power system in Newark, N.J., the electromagnetic properties of iron and nickel, physiological experiments on the effect of electric current on muscle action and blood flow, along with theoretical notes concerning physics, electricity, and mathematics. Among the experimenters whose work appears in this book are Alfred J. Thompson and Arthur Hoopes. At the end of the book is a subject index; it appears at the beginning of the book in the digital edition. The front cover is marked "VI" and" 1892." The book contains 161 numbered pages. Some pages were removed before the book was paginated. Numerous graphs, photographs, blueprints, and other items have been pasted into the book. Courtesy of Thomas Edison National Historical Park.