OPENING OF THE JOHNSTON LABORATORIES 
3 
The whole laboratory is admirably lighted by large windows, and is fitted 
with the electric light. It is warmed by hot water, and ventilated by the upper parts 
of the windows and by extraction shafts arranged down the centre. 
This is the first laboratory that has been constructed in Great Britain solely 
for carrying out research work in bio-chemistry. 
Laboratories of Experimental Medicine and Cancer Research 
The department of Experimental Medicine is housed on the first floor. One 
end of the rectangle is taken up by the Director of the Cancer Research. This room 
has window benches along the south and east sides, while in the centre are two tables, 
fitted with drawers, and with sinks at each end. The room has been equipped with 
all necessary apparatus for the histological and experimental investigation of cancer. 
Attention may be drawn especially to a very line microscope by Swift, and a new 
mincing machine by Cogit, of Paris, by which tissues can be reduced to a state fine 
enough for injection with an ordinary syringe. 
In the machine room in the basement is a centrifuge and disintegrator 
belonging to the equipment of the Research. 
The other (north) end of the rectangle is divided into two private research 
rooms, each having two windows. The intervening portion is divided by a narrow 
corridor, on the east side of which are (i) the attendants' compartment, with large 
sink for washing up, shelves, etc., and a large slate on which are placed the autoclave 
and Koch's sterilizer connected with the laboratory steam supply ; (2) the incubator 
room, which is glazed up to the ceiling, in it are placed the incubator and the hot-air 
sterilizer, on slabs, and the glass-blower's table ; (3) a small room at present used for 
stores. 
On the west side, next the entrance door and just opposite the Director's 
room, is the electrical room. In this is placed out of reach and danger an induction 
X-ray coil, giving a 24-inch spark ; while on the floor is a series of accumulators, 
charged from the main, for working the coil. A complete outfit for X-ray work is 
provided ; also a small resonator for applying the high frequency current and a large 
solenoid within which the patient can be placed. A new model arc lamp for 
investigating the therapeutic action of light, taking a current of fifty amperes, is also 
fixed in this room. It can be carefully darkened if necessary. Beyond this is a room 
for experimental pathology, and after this another research room. The Director's, 
the incubator, and the electrical room are glazed to the ceiling ; the others are 
separated by screens or cupboards, seven feet high, and the corridor is formed in the 
same way. 1 here is consequently through ventilation for the whole floor. The 
fume chamber is placed in the corridor, and ventilates into the main flue. 
Belonging to the Cancer Research is also a greenhouse, in which animals 
accustomed to a tropical climate can be kept. 
