RECORDS. 337 



groups, one of the first order and another of the second : the 

 former stand next to initial stems, and the latter, when in com- 

 position, stand next to terminal pronouns. 



The stems refer to general notions. Initial stems usually 

 express subjective states and secondary stems generally refer to 

 objective relations. The meaning of one stem modifies the 

 meaning of another in a reciprocal manner, with a result of 

 greater specialization. Initial stems have greater extension and 

 can often occur alone as adverbs. 



A number of particles precede the terminal pronouns. The 

 particles refer to causal relations. Some have the special office 

 of instrumentality, as with the hand, foot, mouth, voice and ear. 



The dialect makes a distinction between two opposing cate- 

 gories. Objects that have life and movement come in one class, 

 and objects without those attributes fall in another. The dis- 

 tinction is maintained with great vigor throughout the dialect. 

 A force like personification sometimes interferes with it. 



Professor Boas and Dr. Wissler presented a joint paper, in 

 which they discussed the causes of the increased variability 

 during the period of growth. On the basis of the results 

 of previous investigations, it had been suggested that the 

 increased variability may be due to differences in the rapidity of 

 development. The authors have followed out this line of inves- 

 tigation by collecting material regarding the variability of the 

 period at which certain physiological changes take place. The 

 times of dentition, the beginning of puberty, the appearance of 

 the wisdom teeth, and the beginning of senility, were selected for 

 this purpose, and it was shown that the variability of time at 

 w^hich these phenomena take place increases with increasing age, 

 and apparently the rate of increase is proportional to the age. 

 Furthermore it was shown that during the period of growth all 

 the coefficients of correlation between the sizes of different parts 

 of the body are increased. This can also be best explained by 

 the theory that the phenomena of growth are largely due to 

 acceleration and retardation. The paper by Professor Saville 

 was illustrated by specimens. 



The paper by Mr. Jochelson reported the results of several 



