Volume of printed 'Forms No. 261' with handwritten entries for photographic plates nos 3809 to 4989, made with the 13-inch Astrographic Equatorial. Numbered '4' on the spine.

Column headings are: no. of photo, date, position of telescope, orient. of screw, observer (initials), R.A., Dec. North, Micrometer scale readings (R.A. and Dec.), clock times of exposures (begin, end, duration), barometer (external and internal therm.), plate and development, remarks (e.g. dark, good, duplicate, etc.), signature. Many plates are also marked 'Chart' or 'Cat' [Catalogue] in red. Remarks for Plate 4101 of the nebula of Andromeda state that it was taken to check a supposed observation of a new star there, August 1898.