RECORDS 61 



and that the axial angle is not 90°. Calamine occurs in doubly 

 terminated crystals which show their hemimorphic character 

 plainly. Seamon's theory as to the formation of calamine from 

 "tallow-clay" is not in all cases applicable. The rare copper- 

 lead basic sulphates, caledonite and linarite occur at one mine at 

 Galena, Kansas. This mine also furnishes covellite, cuprite and 

 aurichalcite. 



The observed paragenesis generally follows this order : dolo- 

 mite, galena, sphalerite, chalcopyrite, marcasite, pyrite, barite, 

 calcite. The total absence of certain silicates and the rarity and 

 small size of the quartz crystals strongly precludes the theory 

 that the lead and zinc ores have been brought up from great 

 depths by hot water. 



Attention was called to the coincidence in the location of the 

 ore deposits of this and neighboring districts and the border 

 areas of the Ozark uplift, as pointed out by Haworth.^ 



A fuller discussion of the minerals noted in this paper and 

 their occurrence will be found in the forthcoming Lead and 

 Zinc Report of the University Geological Survey of Kansas. 



Section adjourned at 9:40. 



Edmund O. Hovey, 



Secretary. 



SECTION OF ANTHROPOLOGY AND PSYCHOLOGY. 



April 28, 1902. 



Section met at 8:25 P. M., Livingston Farrand presiding. 



The minutes of the last meeting of Section were read and 

 approved. 



The following program was then offered : 



Robert MacDougall, Two Experiments in Color Vision. 



J. E. Lough, Memory of School Children. 



J. McKeen Cattell, Intensity of Light and the Error of 

 Perception. 



E. L. Thorndike, Sex Differences with Respect to Vari- 

 ability. 



1 Bull. Geol. Soc. Amer., ii : 231, 1900. 



