DESCRIPTION OF LABORATORIES ii 
records of muscular exertion, of the pulse-wave and the heart-heat, can be shown to the whole 
auditorium in the actual course of the making of the record. Arrangements allow also of the 
demonstration of the chief phenomena of vision and colour sensation to the whole audience 
together in the theatre at one time. 
Behind the Large Theatre are the Professor's private rooms, two in number. I'he smaller 
next the Theatre, and opening into it, is fitted for books, papers, writing, >S>:c. The larger is 
avran<ied as a preparation room for the experimental demonstrations for the large Auditorium, and 
Mib romoiCAL Labohatoky 
as a room for the prosecution ot investigation and research. A compartment in this room is 
fitted for experiments in Electro-Physiology. Also in this room is placed an excellent pendrdiun 
myograph, swinging within a turned metal semicircle of 6 feet diameter. To measure out the 
thousandth part of a second with the same accurac)', winter or summer, is easy with this 
instrument. A fellow instrument is the much prized pendidiun belonging to the fohns Hopkins 
University, Baltimore. 
The Class-room for Physical Physiology riuis the length of the east wing, and is lighted 
from north and east. A feature in the room is u handsome galler\-, carried on cantilevers across 
the west end of the room. In this room there is accommodation for a class of more than thirty 
students to carry out the exercises on muscle and nerve, and in doing so to allow of eacii student for 
