16 



The cremator is situated at a little distance from the other buildings 

 and was supplied by Messrs. Manlove, Alhott & Co., of Nottingham. 

 It consists of two separate destructors placed end to end and working 

 through one chimney, and is capable of cremating five or six horses a day. 



The electric installation, the work on which was carried out under 

 the direction of Mr. F. Stephens, the Electrical Engineer to the Public 

 Works Department, consists of an engine and dynamo supplying current 

 at 250 volts pressure to about 200 lamps throughout the laboratory 

 building and to a number of ]3oints whence current can be conveniently 

 drawn for working small motors for various purposes. Electricity is 

 also supplied for driving the centrifugal machines by means of two motors, one 

 of 5 horse-power, and another of 2 J horse-power, the motors being on raised 

 platforms to economise space. The system of distribution for power purposes 

 is ke])t entirely separate from the lighting circuits. Current up to 40 

 amperes is also available for running the large arc lamp used for photo- 

 micrography and ultra microscope work, and for the projection lantern 

 in the lecture room. 



A pump driven by a small electric motor is provided for filHng a tank 

 in the roof. This pump is automatically stojjped when the tank is full 

 by a float operating an electrical device, so that the pump requires no 

 attention when once started. 



The electric light plant is located in a detached building on the 

 north-west side of the laboratory. It consists of a steam-driven high 

 speed, direct-coupled Crompton-Belliss set, running at 400 revolutions 

 per minute, and capable of developing 80 amperes at 250 volts pressure. 

 The current from the dynamo is taken direct to a main switchboard located 

 in the engine house, whence the cables radiate to the main building and 

 to the pump house. Several spare circuits are provided on the board for 

 future extensions. The boiler is of tlie Robey semi-portable type. It 

 is fixed under the same roof as the engine, but in a separate room, and 

 is capable of supplying all the steam required in connection with the supply 

 of electricity, and for sterihsing purposes, as well as for making distilled 

 water. 



The auxiliary plant in counec;tion with the boiler consists of a feed- 

 ^\'ater heater worked by exhaust steam from the enguie and a hot water 

 cyclinder for the supply of hot water for all purposes throughout the 

 laboratories. This water is also heated by means of exhaust steam, use 

 beuig thus made of heat which would otherwise be wasted. These heaters 

 are situated in a chamber below the level of the boiler house floor. 



Installed in a recess in the boiler house is the retort for making gas 

 from petroleum, a Mansfield generator being used. As the gas is pro- 

 duced it flows from the generator to the gasometer about thirty yards 

 away ; this gasometer has a capacity of 1,000 cubic ft. and holds sufficient 

 for about two days' supply. Gas is of course largely used in the 



