been emptied by the Indians) with solid masses of mortar and stones."[1] Norman, speaking of the ruins of the House of the Cacique at Chichen, remarks, "that the wall is made of large and uniformly square blocks of limestone set in mortar, which appears to be as durable as the stone itself"[2] Elsewhere, speaking of the ruins of Yucatan generally, he observes, "the stones are cut in parallelopipeds of about twelve inches in length and six in breadth, the interstices filled up of the same materials of which the terraces are composed."[3] That these tribes used mortar of some kind in their stone walls cannot be doubted, but these several statements do not prove the use of quick-lime, which is the main question Mr. Stephens' statement satisfied me until I saw the New Mexican pueblos. These show that a very efficient mortar can be had without the use of lime. The Indians of Mexico and the coast tribes near Vera Cruz plastered their houses externally with gypsum, which made them a brilliant white, and the stucco used upon the inner walls of houses in Chiapas and Yucatan was not unlikely made of gypsum. This mineral is abundant as well as easily treated. From it comes plaster of Paris, and from it may have come in some form the bond which held the mortar together, to the strength of which Mr. Stephens refers.
The neatness and general correctness of the masonry is now best seen in the doorways. In the standing walls of the second story, and of the first, where occasionally uncovered, there are to be seen two doorways in each room, as before stated, running in all cases across the building from the court side toward the external wall, and never in the direction of its length. These doorways measured some three feet two inches in height by two feet six inches in width, and others three feet four inches by two feet seven inches.
The stone used in these doorways are rather smaller than those in other parts of the wall, but prepared in the same manner.
I brought away two of these stones, taken from the standing walls of the main building, as samples of the character of the work with respect to size and dressing. Fig. 41 represents one of them, engraved from a photograph. It measures eight inches in its greatest length by six inches in its greatest width, and it is two and three-quarter inches in thickness. The
