great body o? evidence brought before the conquering 3 uropeana 
was not appreciated by them, but rudely destroyed and now the 
d'V ; *4>*W*« C 
remains, ^rchii-t-eetu-ral and sculptural, are being gathered to- 
gether and studied in the most painstaking manner by our schol- 
ars, who hope almost against hope to find a sufficient key 
' 
to solve the problem. Within the same cluster of graphic 
phenomena which gave birth to writing we have evidence bearing 
upon other important branches. Here we get glimpses of the 
history of the calendar; here we find traces of the pictorial 
art which had not yet reached the stage of light and shade, 
perspective, and portraiture, .and discover many gems of .era- 
(r-ftll' 
b ellishment mythologies and esthetic. 
Although many of the obscure problems arising in 
this American field have been successfully worked out, many 
i 
others are still awaiting the attention of Americanists and will 
no doubt yield little by little to their persistent efforts. 
Tne greater unsolved problems of aboriginal America 
> 
are chiefly those of race origins, of culture origins, and of 
