32 PSYCHOLOGICAL EFFECTS OF ALCOHOL. 



the room was commonly kept in motion during experiments, but 

 naturally it was not allowed to blow directly on the subject. 



A general plan of the room and apparatus is given in figure 1. A 

 general photographic view is given in the frontispiece. The string 

 galvanometer equipment for pulse-records occupied one side of the 

 room (bottom of the plan). The galvanometer itself occupied the 

 central table G. A hand-fed horizontal carbon arc light L', burning 

 at 5 amperes, supplied its illumination. A separate controlling table 

 at the left of the galvanometer table provided the space for resistances, 

 switches, etc. The recording camera RC occupied still another table, 

 shown at the extreme left hand. 



The main apparatus table, approximately in the middle of the floor, 

 held the following apparatus : inductorium and resistance boxes for the 

 Faradic threshold (Martin measurements) ; enlarging camera for 

 photographing the eye-movements and eye-reactions; the word-expos- 

 ure apparatus; and the Blix-Sandstrom kymograph, for patellar reflex 

 and memory test. A separate table, shown at the upper left of the 

 plan, held the camera for the lid-reflex records. The source of light 

 for these various photographic records was the self-regulating arc light 

 L at the right. 



Figure 2 is from a photograph of the main apparatus table from the 

 corner of the room which was normally occupied by the recording 

 camera for the string galvanometer. It shows the Blix-Sandstrom 

 kymograph in the foreground, with the patellar-reflex apparatus and 

 word-exposure device at the right, and the voice-reaction key at the 

 left. In the background is the camera for eye-movements, with its 

 head-rest at the left. At the extreme upper left is shown the noise- 

 stimulus key for the protective lid-reflex, and a part of the lid-reflex 

 camera. 



In figure 3 we have a view of the same table from the position of the 

 self-regulating arc light, i. e., from the extreme right end of figure 1. In 

 the center foreground are the inductorium, mil-ammeter, and resistance 

 boxes for the Faradic threshold. Beyond these the Blix-Sandstrom 

 kymograph is seen in end-view. The patellar-reflex apparatus appears 

 at the left. On the right appears the long enlarging camera for the eye- 

 movements. 



All measurements, except those of Series V, i. e. } except the associ- 

 ation and Faradic threshold measurements, were made with the sub- 

 ject either at position I or position II, figure 1. In Series V the subject 

 and Dr. Wells, the operator, occupied the balcony. 



