11 



a small lavatory, and on the right, fitted with shelves for the cages, is the 

 room in which small animals under experiment are kept .; this room has 

 a table in the middle and is fitted with slate slabs and a sink by the window. 



Returning through the door into the laboratory building, the first 

 room on the north side is a room used exclusively for bacteriological work, 

 and mainly for the preparation of mallein, tuberculin, pleuro-pneumonia 

 cultures, and quarter-evil vaccine, and connected with it by a double 

 door is an incubation room 8 ft. square and 8 ft. high insulated with 

 asbestos and heated by a gas stove which is automatically regulated by 

 the Eoux system. Next to this room is a small room fitted as a pharmacy, 

 which is also used as a chemical and drug store ; against the walls on 

 each side are large cupboards with sliding glass doors, and a table with 

 a sink is in the centre. 



Adjoining is another small room used for making distilled water, 

 for which purpose a large Murrle distilling apparatus, fed by steam from 

 the main supply, has been provided, and is so arranged that it can also 

 be used with gas ; connected with it is a drying oven, the temperature 

 of which can be raised if necessary by super-heating the steam by means 

 of a gas jet. A Buchner press, mounted on a concrete stand is placed in 

 this room, and there is a small fume closet containing the serum 

 coagulating apparatus. 



Adjoining is the cold storage room, provided with double doors, 

 the walls and ceihng of which are completely insulated with asbestos and 

 sihcate cotton. In the centre is a large ice chest in which compartments 

 are provided for keeping pathological specimens. The walls are lined 

 with shelves filled chieflv with bottles of horse-sickness virus. 



Returning again to the other side of the building next to the general 

 office is a room at present used as a workroom for the lay assistants ; 

 adjoining this is the room set aside for the large centrifugal machines ; 

 these, two in number, are by Lautenschlager, of Berhn : the larger, driven 

 by a 5 horse-power electric motor and making 3,000 revolutions a minute , 

 is provided with four receptacles each of a capacity of one htre ; the 

 smaller, driven by a 2] horse-power motor, makes 4,000 revolutions per 

 minute, and is capable of centrifugahsing one litre of liquid. A smaller 

 machine, driven by h horse-power motor, is fixed against the wall, and the 

 room is fitted up in other respects as a laboratory. Opposite the last two 

 rooms are two storerooms for laboratory apparatus and glassware, and on 

 the same side is a strongroom for the records. 



The corner room on the front of the building is the room used for 

 photography, in size similar to the Pathological Laboratory, situated on 

 the opposite corner of the building, with two large windows facing the 

 south and a window on the west. A working bench extends the length 

 of the room under the windows, with a sink at each end, and the walls are 

 fitted with glass panelled cupboards. In this room there is a Zeiss 



