Notched human bones are not uncommon in ancient Mexico, and some have been found elaborately engraved. In the course of excavations made in 1900 in the street back of the Cathedral in the City of Mexico, were uncovered many small pottery models of musical instruments which had been placed there undoubtedly when the foundations of the great Aztecan _teocalli_ were laid. The writer secured for the American Museum of Natural History examples of these interesting models. Among them was a notched bone having attached to it a model of the handled instrument with which it was rubbed or rasped.[108] * * * * * Finally, attention is called to three objects of wood, of Mexican origin, in the Museo Borgiano, Rome. They have been described by Colini, and two of the pieces illustrated, in the _Bollettino della Società Geografica Italiana_.[109] The first is an idol representing a human figure, 17¾ inches in height; the other two specimens, those figured by Colini, are masks, and it is highly probable that all of these pieces were once decorated, at least in part, with mosaic. One of the masks is 6⅞ inches, and the other 7⅛ inches, in height. CONCLUSION In view of the considerable number of objects of stone mosaic that were sent to Europe during the first years of the Spanish conquest of Mexico, part of the loot obtained by Hernán Cortés, it is quite possible that other examples are still hidden away either in Spain or in Italy, which some day will be brought to light. Only twenty years ago two wonderfully preserved carved ceremonial spear-throwers, or atlatls, of wood, covered with delicate gold-leaf, were found in an old leather-covered case in a house in Florence, and are now exhibited in the Ethnological Museum of that city. It is not to be doubted that they were sent from Mexico by Cortés himself, and remained stored away, unknown to the world, until recent times. Bushnell, who figured and described these atlatls, believes that they were formerly in the famous collection of the Medicis, and that other objects of Mexican origin may be hidden away in Italy, to be revealed from time to time.[110] Again, in 1891, Mrs. Zelia Nuttall was the first to bring to our notice the important mosaic shield, and the still more interesting feather-mosaic shield in the Castle Ambras near Innsbruck, which were shortly afterward transferred to the ethnographical section of the State Natural History Museum in Vienna.[111]