A drawing showing a plan and vertical sections showing the Southern Galleries. Also included are detailed plans of the buildings to the south of the Galleries including the Astronomical Observatory, including its telescope adjacent to Exhibition Road, the offices for Dr Lockyer, 'Museum Photographer Mr. Jackson', and for Sir W. Abney; a Computing Room, 10" Equatorial Refractor, Rowland Grating Camera, 6" Dallmeyer Camera, polar axis for meteor Cameras, 36" Reflector, 3" Transit instrument, and at the western end of the site Coleostat, Photo-spectro Heliograph, and a 30" reflector.