The architectural feature which has attracted most attention is the pyramid, which to some writers is of itself conclusive proof of an Egyptian origin. The points of resemblance, as given by those in favor of this theory, are worth studying. García y Cubas claims the following analogies between Teotihuacan and the Egyptian pyramids: the site chosen is the same; the structures are oriented with slight variation; the line through the centre of the pyramids is in the 'astronomical meridian;' the construction in grades and steps is the same; in both cases the larger pyramids are dedicated to the sun; the Nile has a 'valley of the dead,' as at Teotihuacan there is a 'street of the dead;' some monuments of each class have the nature of fortifications; the smaller mounds are of the same nature and for the same purpose; both pyramids have a small mound joined to one of their faces; the openings discovered in the Pyramid of the Moon are also found in some Egyptian pyramids; the interior arrangement of the pyramids is analogous.[I-119] [Sidenote: EGYPTIAN AND AMERICAN PYRAMIDS.] The two great pyramids of Teotihuacan, dedicated to the sun and moon, are surrounded by several hundreds of small pyramids. Delafield remarks that the pyramids of Gizeh, in Egypt, are also surrounded by smaller edifices in regular order, and closely correspond in arrangement to those of Teotihuacan.[I-120] The construction of these two pyramids recalls to Mr Ranking's mind that of "one of the Egyptian pyramids of Sakhara, which has six stories; and which, according to Pocock, is a mass of pebbles and yellow mortar, covered on the outside with rough stones."[I-121] In some few instances human remains have been found in American pyramids, though never in such a position as to convey the idea that the structure had been built expressly for their reception, as was the case in Egypt. It is but fair to add, however, that no pyramid has yet been opened to its centre, or, indeed, in any way properly explored as to its interior, and that a great many of them are known to have interior galleries and passages, though these were not used as sepulchres. In one instance, at Copan, a vault was discovered in the side of a pyramidal structure; on the floor, and in two small niches, were a number of red earthen-ware vessels, containing human bones packed in lime; scattered about were shells, cave stalactites, and stone knives; three heads were also found, one of them "apparently representing death, its eyes being nearly shut, and the lower features distorted; the back of the head symmetrically perforated by holes; the whole of most exquisite workmanship, and cut or cast from a fine stone covered with green enamel."[I-122] In the great pyramid of Cholula, also, an excavation made in building the Puebla road, which cut off a corner of the lower terrace, not only disclosed to view the interior construction of the pyramid, but also laid bare a tomb containing