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UNIVERSITY OF GRONINGEN
Fig. 6
31.	Bicycles
32.	Storeroom
33.	Storeroom for glass and chemicals
34.	Electrophysiology
35.	Gas, water, and electric meters
36.	Packing rooms
37.	Refrigeration machine
labels, and so forth, is also located in this room.
It is well known that vital processes, and chemical processes in general, are in a high degree dependent upon temperature. In the laboratory for body-temperature (40) the temperature can be minutely regulated and, if necessary, kept at a given point. This room, which is provided with taps for compressed air and suction, electric centrifugal apparatus and a current transformer, has also been found of service in studying the organs of warm-blooded animals after they have been taken from the body. If the isolated organ is to be kept alive it is absolutely necessary that the temperature should not fall below that of the body. Apparatus for this purpose, which is difficult to devise, is rendered superfluous by this
38.	Low temperature laboratory
39.	Engine room
39a. Carpenter shop
40.	Laboratory for body temperature
40a. Engine room for room 40
41.	Centrifuge room
41a. Annex of room 41
room. The way in which constancy of temperature is obtained has been very much simplified since the building was put into use. Other temperatures between 20° and 40° C. may also be obtained in this room.
A large corner room (34) on this floor is designed for electrophysiological researches and is equipped with the necessary apparatus such as a string galvanometer, etc.
Near the main building and standing by itself is a small building known as the glass room (see Fig. 3) which may be used for experimenting with the effects of sunlight on life.
One wing of the stable (see Fig. 3) is reserved for small animals, the rest being used for horses, cows, sheep, goats, etc. It has a