438 
Paul Stroobant contributed a large section dealing 
with the progress of astronomy during the year IgI2. 
This section has now been issued in a small book 
form, and wiil be found very handy and useful for 
reference. 
NEW PHYSIOLOGY SCHOOL AT 
CAMBRIDGE. 
Oe June 9, H.R.H. Prince Arthur of Connaught 
opened the new physiological laboratory erected 
by the Drapers’ Company, and presented by it to 
the University of Cambridge. A comparison of the 
old laboratory with the new illustrates the remarkable 
increase in complexity that has taken place in recent 
New Physiology School, Cambridge. 
NAT ORE 
[JUNE 25, 1914 
and the current can be taken direct from this when 
arc lamps are in use 
Compressed air is supplied to the research rooms, at 
a pressure of 25 Ib. to the sq. in.; the compressor has 
an automatic switch which starts the motor when the 
pressure drops to 12-15 lb. to the sq. in. The com- 
pressed air, besides its other uses, is employed for 
aerating the water in the canks of a small room fitted 
up as an aquarium. Some of the tanks contain sea- 
water for marine animals, and by the method em- 
ployed, the sea-water only requires renewal about once 
in three months. 
There is a special boiler for supplying hot water to 
the sinks, and a destructor for burning animals killed 
in the laboratories. On the ground floor is a refrigera- 
View from N.W. The large lecture room and the biochem.cal department wil form a wing on 
the E. side of the entrance door. 
years in physiological investigation. The old labora- 
tory, the last part of which was built in 1891, was 
for some years amongst the best in the country, yet it 
had no electrical supply, and the research rooms 
simply afforded space without any adaptation + for 
special purposes. The following account of the chief 
features of the new laboratories will show how the 
conditions have altered. The building is 162 ft. long 
and 44 ft. broad. The eastern half consists of five 
storeys, the western half has the fourth and fifth 
storeys thrown together to form one large room with a 
gallery. Electric light is throughout. The rooms are 
supplied with 4-volt and r10-volt current from a 
storage battery, and in many of the rooms the cur- 
rent can be taken from plugs hanging from the 
ceiling. The battery has a capacity of 480 ampere- 
hours; it is charged from an external power station, 
NO! 2230, VOIo3s | 
tor plant keeping a small room above it on the first 
floor at 0°-3° C. 
Two rooms are fitted up for research in electro- 
physiology, each having a dark room, so that photo- 
graphic records of the electrometer, and string gal- 
vanometer, can be taken. These are on the ground 
floor, which is 5 ft. below the surface; the stone slabs 
on which the instruments rest are practically devoid 
of vibration. Two rooms on the same floor are 
arranged for thermo-electric research, and a continuous 
record can be taken of the heat given out by small 
| animals over a period of several days. Two communi- 
| cating rooms are designed for surgical operations; 
one of these, and some of the experimental rooms, | 
have a special arrangement of hot-water pipes for 
heating to 75° C. Adjoining these are experimental 
rooms with kymographs. 
There are three dark 
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