NEW YORK ACADEMY OF SCIENCES 587 



Dr. Cole then described the life history of a tube, stating 

 that definite changes occur in a tube when used, including a 

 crisis, and explained the difference between the action of new 

 and seasoned tubes and the difficulty of exciting very old tubes. 



He also gave his opinion . of the cause of the purple color 

 of the glass of a tube and suggested that there is a molecular 

 rearrangement of glass similar to that occurring in steel when 

 magnetized. In a new tube the direct rays amount to 30 to 

 40 per cent., while in some seasoned tubes as much as 75 to 

 90 per cent. Furthermore the indirect rays project them- 

 selves behind the bones, causing a lack of definition of bones 

 and obliteration of detail of soft parts, while direct rays give 

 detail in soft parts, showing even the blood in the veins. 



C. C. Trowbridge, 



Secretary. 



SECTION OF ANTHROPOLOGY AND PSYCHOLOGY. 



March 27, 1905. 



Section met in two sessions, at 2.30 and 8.15 p.m., at the 

 Psychological Laboratory of Yale University, New Haven, 

 Conn., in conjunction with the New York Section of the Ameri- 

 can Psychological Association, Vice-President F. J. E. Wood- 

 bridge presiding. 



The minutes of the last meeting of the Section were read 

 and approved. 



The following program was then offered : 



At the afternoon session: 

 Raymond Dodge, Central Anesthesia during Eye Move- 

 ment. 

 Charles H. Judd, Movements of Convergence. 



E. H. Cameron, Variations in Sung Tones. 



F. Lyman Wells, Perception of Linguistic Sounds. 

 Naomi Norsworthy, Mental Growth in Deficient Children. 



At the evening session: 

 Frank G. Bruner, Racial Differences in the Upper Limit 

 of Audibility. 



G. Cutler Fracker, Transference of Practice. 



