360 PROCEEDINGS OF SECTION H. 
room for diagrams. The lecture table will extend the full width 
of the room, and will have a leaden trough along the side 
nearest the class. Over this, staging can be erected, and glass 
tubing fitted for purpose of illustr ating the lectures on discharge 
of water through orifices, pipes, &c. At one end a massive 
stone slab will be let into the wall, forming a steady support 
for instruments used in illustration of lecture. Provision is 
being made for darkening the room when necessary to permit 
of the lectures being illustrated by the optical lantern. A small 
apparatus-room and the lecturer’s private room both open off 
the lecture-room. 
The drawing office is 50 ft. by 30 ft., hghted from both sides 
and from the roof, and heated by two fireplaces placed at 
opposite corners of the room. It will accommodate about forty 
students at one time. 
Access is obtained through the drawing office to the eastern 
wing, in which is the dark room, the research room, a small 
workshop, and the astronomical observatory on the roof. The 
dark room will be 10 ft. by 15 ft. 6 in., and will be entered 
through a light lock. It will be fitted up with facilities for 
blue print work up to antiquarian size, in addition to ordinary 
photographic work. The light obtained in the room is from the 
east. The research-room is 20 ft. equare, fitted up with draft 
cupboard in one corner, a stone slab 3 ft. wide along the south 
wall, a stone table 6 ft. by 3 ft. in the centre of the room, sup- 
ported on a brick pier resting on a division wall of the build- 
ing, and, in addition, water will be laid. The workshop will be 
the same size as the dark-room, and will be available for hght 
work. 
The astronomical observatory is located on the roof of the 
eastern wing, which is made flat. A transit-room, 10 ft. by 
13 it., and 9 ft. 9 in. high, will be placed at the north-west 
corner of the wing, the instrument being supported on a pier 
over the junction of the north wall of the drawing office and 
the west wall of the eastern wing. The transit-room will be 
constructed in timber and calvanised iron, with a flat roof, but 
the north wall of the wing will be carried up to the top of the 
room, giving a steady support to all supplementary instruments, 
such as barometer, chronometers, chronograph, and astronomi- 
cal clock. Rolled steel joists will be placed across the north- 
east and south-east corners of the eastern wing immediately 
above the flat roof, and on these brick piers w ill be built for 
supporting theodolites, &c. The joists will be covered, but not 
touched, by the timber platforms supported on the roof, thus 
allowing of the observer moving round the instrument without 
communicating any vibration to the pier. A third pier will 
be placed on the centre of the eastern wall, which is steadied 
