iSq.v] OO [Crawfora 
The fourth aiui latest evidence of subsidence is found at an 
altitude of about 25 feet above the lake, in loosely compacted oi* 
sometimes cemented deposits of drift, ejecta, and detritus, — 
generally in spaces and joints between upturned rocks. In the 
valley of Momotombito to the north of and near the lines of stone 
images, this deposit holds numerous fragments of (coarse, imadoined, 
unglazed, unburnt pottery.^ This circle of deposits was found to 
cross obliquely, at an angle of about 10 degrees, and in part cover 
some rocks that the sculptors probably had removed to between 
the lines of stone images. Tt was this subsidence of 25 feet occur- 
ring in the early part of the Tei-race epoch, as shown on the main- 
land to the west, which flooded to an average deptli of about 25 
feet the entire valley west and southwest of Lake Xocotlan to the 
Pacific Ocean, and which caused the sculptors and architects to 
abandon their work and seek security from floods and from vol- 
canoes in the nearest and most accessible non-volcanic range of 
mountains, namely, the ^l??ien-iVyMe Range, about forty leagues to 
the east of the Island of Momotombito. 
The type of man to ivhich the sculptors belonged. These artists 
most probably had for models some of the eminent men of their 
own people, and had no knowledge of other types of man ; conse- 
quently they represented in these statues, a type of large, well- 
formed man, above the average height, with large mammae on a 
well-expanded chest, head distinctly brachycephalic, forehead 
prominent and liigh. Tlie heads appear to be represented as slightly 
comi)ressed anterio-posteriorly, but no dolichocephalic features 
are indicated. The man represented by the sculptured stones 
found in the valley of Momotombito, resembles more nearly the 
Polynesian- Mongolian than any other race, and we probably have 
in these sculptors and the models for their stone images, a Poly- 
nesian or modified Mongolian type of man, about six feet high, of 
large and strong frame, and distinctly brachycephalic, a people of 
sucli intellectual development that they could patiently for many 
months or years continue their work, and who studied, obtained, 
and retained such distinct and true impressions of the human 
form and features, as to be able to present them in hard rock, in 
carefully chiseled outlines, using only rougli flint and felsite tools. 
These artists, judging from their works, were far superior in intel- 
lectual attainments to any of the Indians and to a large per- 
IThis pottery was carefully sun-dried but not hardened by tire. 
