168 RECORDS. 



work, and that the Victor Talking Machine Company would 

 be willing to loan its record-talking car when it is finished. 

 Exhibits of various material and speech curves were made. 



Dr. Bair stated that the measurements were taken on Wor- 

 cester school children. A high coefficient of correlation was 

 shown between stature and height-sitting, stature and weight, 

 and height-sitting and weight. Between stature, height-sitting, 

 weight, with length of head and width of head the amount of 

 correlation was much less and much more irregular than be- 

 tween the measurements first named. This irregularity was 

 partly due to the small number of cases examined. 



Professor Lough said that stereoscopic pictures may be united 

 without the aid of a stereoscope, i. e., by direct fixation, when- 

 ever the distances between similar objects in the two pictures is 

 not greater than the interocular distance. When pictures are so 

 united — giving a direct perception of the third dimension — 

 any movement of the picture from side to side gives the im- 

 pression that objects in the background are moving through a 

 greater distance than are the objects in the foreground. This 

 " slipping " of the background is perceived with still greater 

 vividness when the picture remains stationary and the head is 

 rotated or moved from side to side. In bringing a stereoscopic 

 picture nearer the eyes the background seems to approach more 

 rapidly than the foreground, and in moving the picture away 

 from the eyes the background seems to move away more 

 rapidly. The apparent motion in stereoscopic pictures .seen 

 under the above conditions is probably due to the fact that the 

 angle of parallax remains constant, while the line of direction 

 varies, with every movement of the head or of the picture. 



The paper of Professor MacDougall supplements and in three 

 respects aims to correct the reports of previous experiments on 

 facial vision. In the perception of objects in proximity to the face 

 independently of the sense of sight, the nature of the sensory im- 

 pression upon which perception depends is not commonly dis- 

 criminated. In the present investigation the percentage of correct 

 perceptions was found to lie between 50 and 75, that is, within 

 the subliminal region. This result is contrary to previous work 



