This notebook covers the period August-September 1888. It was used by Erwin Von Wilmowsky as a rough logbook for experiments, analyses, and various other daily operations in the chemical laboratory. Inserted into the book are several loose pages, including a note from Arthur E. Colgate requesting Wilmowsky to prepare chemicals for use in experiment number 162. That experiment was part of the search for an efficient battery for the phonograph. Transcriptions of these battery records can be found in Arthur E. Kennelly Notebook #6. The inside front cover is labeled "E. Wilmowsky's Dpt." According to a list of laboratory experiments, ca. 1903, this book was assigned the number "74." The book contains 189 numbered pages. Only 11 pages have been used.

Only a 2-page entry regarding the establishment of a "Meter Zinc Department" within the chemical laboratory has been selected.