The entrance to the large cave was near the summit of the cliff and so difficult to reach that it can never have been long used as a place of residence, though it would form an exceedingly strong position to hold against an attack from without, as it is necessary to cross a fallen tree trunk in order to enter, and this might easily be hauled back into the cave or pushed away from its mouth, leaving it practically inaccessible. Nothing was found in the cave except a large quantity of bats' excrement and of rough red potsherds. TWO PAINTED STUCCO FACES FROM UXMAL Two human faces molded in stucco and painted were discovered in a small stone-lined chamber situated beneath one of the end rooms of the Casa del Gobernador in the ruins of Uxmal, northern Yucatan. The room was accidentally disclosed by the caving in of a small part of its roof. One of its walls was covered, above a stone cornice, by a frieze of hieroglyphs, and against this wall stood a small square stone altar, each side of which had been decorated with a human figure molded in stucco and painted. Unfortunately these figures had fallen: the two heads here described are the best preserved parts of them which remain. Describing the sculpture in stone which adorns the outside of the Casa del Gobernador, Stevens ventures the opinion that some of the heads were portraits of celebrated men of the period. The discovery of this chamber is extremely interesting, as it opens up the possibility that many, if not all, of these vast substructures, built apparently of solid stone, which throughout Yucatan support more or less ruined buildings, may in fact be honeycombed with chambers. Stevens first suggests the possibility of this. Unfortunately since Stevens's day little or nothing has been done throughout Yucatan in the way of excavation to verify the truth of his surmise. Of the two heads now described, one probably represents a male, the other a female; there is, moreover, a marked individuality about each of them which renders it extremely probable that they are portraits, possibly of some "Halach Uinic" (real man, or chief) of Uxmal and his wife, during the palmy days of the triple alliance.