This notebook contains records of chemical experiments for the automatic telegraph, lists of parts, and lists of employees and their hourly rates. The entries are in the hand of Charles Batchelor. The book is undated but probably was begun early in 1873, since three of the workmen mentioned (Watchman, Carver, and Millis) appear in the time books only for March of that year. (See Cat. 1218, Accounts Series.) The cover is marked \"Wages Price list.\"" Eighteen pages of this unnumbered book have been used."