ANTHROPOLOGICAL SOCIETY. 



the padre. The deification of the Tecpatl, or obsidian knife, 

 in the Aztec mythology and in the Guatamalan slabs, was 

 taken as an indication of the Mexican origin of the latter. 



THIRD REGULAR MEETING. 



April 1, 1879. 



Arrow-Head Making. 



By FRANK H. CIISHING. 



Mr. Cushing described his own experiments in making 

 stone arrow-heads, by sudden pressure, with a sharp-pointed 

 bone. Many Indian tribes were known to make their arrow- 

 heads in the same manner. With specimens from the Na- 

 tional Museum, he pointed out the different stages exhibited 

 in the fashioning of each implement. 



Indian Pictographs. 

 By G. K. GILBERT. 



This paper was a continuation of one read at a previous 

 meeting. As it was based upon illustrations presented to 

 the society, it is difficult to give a verbal abstract. 



FOURTH REGULAR MEETING. 



April 16, 1879. 

 Color-Blindness as Affected by Race. 



By SWAN M. BURNETT. 



Dr. Burnett gave the result of an examination by him of 

 3,040 pupils in the schools of 'negro children in the Dis- 

 trict of Columbia. He spoke of the influence exercised by 



