1896.] Anthropology. 521 
facade upon the structure where no long stones project from the pud- 
ding like hearting within into the face, to clinch the crust to the mass, 
the V shape and consequent lack of catch of many of the facing 
Eig. 2. Examples of Terraces and Pyramids, superstructures omitted. 
stones, are dwelt upon in order, and a series of sketches disposed to 
catch the attention and impress the memory, show the varying forms 
of tumuli, (Fig. 2) the generally rectangular ground plan of buildings, 
(Fig. 3) and the construction of the arch by the edging in of opposing 
walls. 
A question of much interest is touched upon when Professor Holmes 
in the introduction, refers to the geological age of the rock floor of 
the region in question, since the chance for establishing conclusions in 
Yucatan as to man’s existence in geologically ancient times diminishes 
according as we learn that the Peninsula was too long under water 
36 
