656 RECORDS. 



Mr. Franz presented some results of experimental investiga- 

 tions of visual after-images. The latent period increases as the 

 area of stimulation decreases ; but it decreases as the intensity or 

 the duration of stimulation increases. The duration of the after- 

 image increases with any increase in the intensity, duration, and 

 area of the stimulation. The after-image of the colors in the 

 middle of the spectrum is not more intense than that of the ex- 

 treme colors if the intensity of the colors is first equalized. The de- 

 gree of attention is of the first importance in determining the dura- 

 tion of the after-image. Retinal transference is not real ; its 

 apparent reality is due to the impossibility of distinguishing the 

 fields of vision of the two eyes. 



Mr. Swanton. Discourse in the Chinook language show^s 

 great lack of subordination, its short sentences following each 

 other without connectives. The verbs are aggregations of many 

 pronouns added to a short stem. They serve in this way to 

 epitomize the whole sentence, object and indirect object, as well 

 as subject. 



Mr. Hagar. The Peruvians, contrary to the generally ac- 

 cepted opinion, were in possession of a large amount of astro- 

 nomical knowledge. It can be shown that they had a full 

 zodiac, and that their whole political as well as their religious 

 life was controlled by their astronomy. There are also many 

 striking similarities between their terminology and rites and 

 those of other, frequently very remote, peoples. 



Charles H. Judd, 



Secretaiy. 



PUBLIC LECTURE. 



under the auspices of the sub-section of philosophy. 

 April 28, 1899. 



Professor Charles R. Lanman, of Har\-ard University, deliv- 

 ered a lecture on The New Scholar, his Ideas and Problems. 

 The lecture was a very interesting and thoughtful summary 



