Fig. 4. Miniature portal of a small temple on the Island of Cozumel, a little entrance only 4 feet 6 inches high, to a diminutive building not over 20 feet square by 10 to 12 high resting on a terrace about 5 feet high, of the two round columns supporting the stone lintels, one is carvedo ai 90 represent a kneeling human figure. From a photograph by Mr. E. H. Thompson.

PLATE IX.

3..

Ruins of Tuloom as seen from the Sea.

Fig. 5. The building fronts inland and its rear walls facing the water are without doors and windows.

facade upon the structure where no long stones project from the pudding 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

a

b

d

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f

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