122 The Molteno Institute for Research in Parasitology 
basements are O' 9" high, the ground and first floor rooms 10' high, the second floor rooms 
9' high. Where there are no basements, the ground floor is suspended 4' above the concreted 
surface of the ground-level. The roof parapet is 4' high, the chimneys being but slightly 
higher. The skylight is 65' long and consists of 34 lights (4' x 2') framed in teak, the glazing 
being double with a closed air-space between the pairs of panes; the slated surface which 
serves for the collection of rain-water measures 66' 8" x 7' (area 467') and is tilted at an 
angle of 30°, whilst the glazed surface is 4' wide and stands at an angle of 60°. The internal 
measurement of the chute is 2' x 2', that of the hoist-hole 4' x 4'. 
The work benches throughout are 27" wide, their surface being 33" above floor-level. 
The slate bench in the aquarium window is 30" wide and 21" above floor-level. The chemical 
bench in the centre of the room measures 7' x 4'. The doors measure 6' 7" x 3' as a rule. 
The ivindoivs in seven research rooms and aquarium occupy almost the whole north side of 
the room, the fixed central pane measuring 5' 11" x 5' 9". The borrowed lights (3' 4" x 22") 
are placed 6' 11" above floor-level, fifteen borrowed lights being on the ground floor and nine 
on the first floor, occurring either as transoms over doors or fixed in corridor walls into 
which they mostly open. 
Heating , Ventilation and Lighting. The building is heated by hot water on 
the low pressure system, the boiler (“Coronation”) being situated in the 
basement alongside the coal cellars. There are 44 radiators placed in rooms, 
corridors and landings, 18 being on the ground floor, 14 on the first floor, and 
12 on the second floor. The radiators are mostly placed near windows beneath 
work benches but to one side so as not to incommode persons working at the 
bench; they draw fresh air through apertures from the outside and the warmed 
air passes up through a cast-irou grating in the bench beside the window. The 
radiators have been found to heat the building very efficiently. There are 
three open fireplaces in the building, two with modern gas hearths (in hbrary 
and tea room), and one in the office where it is at times convenient to be able 
to burn papers. Apart from these sources of heat, arrangement was made 
whereby gas-stoves may be introduced into the building at some future period 
if required. For this purpose, small triangular gas-fume flues were built in 
eleven rooms by means of flat bricks, measuring 9" x 9", diagonally placed 
across one corner of the room, these flues leading up to the roof alongside the 
columns in the research museum; the small chimney-like vents to these flues 
are shown at five points on the plan of the roof (Fig. 4). The corner position 
to be occupied by gas-stoves, if required, is indicated on the plans. To instal 
gas-stoves it is merely necessary to cut a hole through the plaster and thin 
brick for the purpose of inserting the stove-pipe. 
A entilation is secured by opening windows, transoms, or borrowed lights, 
and by allowing the air to enter from the outside through the apertures near 
the radiators. Reference has already been made to the character of the 
windows (see p. 120). 
Owing to the large windows, glazed tops of swing-doors at the ends of 
corridors, borrowed lights suitably placed, and to the general whiteness of the 
interior of the building, the latter appears singularly well illuminated during 
the daytime. Thoroughly efficient artificial illumination is secured by means 
of electric light distributed in the form of drop-lights, wall-brackets and wall- 
% 
