﻿INSTITUTE OF PHYSIOLOGY
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works, one wire as neutral and the other as positive or negative 220 volts, a triphasic alternating current of 250 volts, and one phase of the alternating current of 125 volts.
The main electric wires are all placed in the central corridor of the basement on isolators embedded in wooden layers, which are fixed in the walls. It is very easy to direct the desired current to one room or another by making a connection with the main wire and passing it through a hole in the wall. In each of several rooms there has been arranged a switchboard with different currents. All places are provided with plug contacts.
Besides the motors used for working air fans, power-transmission shafts, machines, centrifuges, etc., we have several transportable small motors varying from 1/16 to 1 H.P. Nearly all these motors are equipped for a continuous current of 220 volts.
The lighting comes from a 220-volt continuous current, with the exception of the lighting of two staircases where we applied alternating current, in order to have light always in case of accident.
Sewerage System
The sewerage system is connected with that of the public sewer in three places. There are two main sewers in the building, one leading the water from the end of the teaching wing and passing under the floor of the central corridor of this wing, and the other receiving the water from the main building and passing under the floor of the central corridor of the building. In each room of the basement there are lateral sewers going from the outer wall to one of the main central sewers. The secondary sewrers receive the used water of the upper floors by vertical conducts. The third main sewer collects the used water of the stables and of the house of the attendant to lead it to the public sewer. In different places are peep holes for controlling the sewerage system. All the main, vertical, and secondary sewers are made of glazed, gray stone, and have a large diameter.
DESCRIPTION OF SPECIAL ROOMS
All the rooms of the basement are 3.30 meters high; those of the ground floor with the exception of the
Fig. 8.—Students’ Laboratory for Experimental Physiology