Acknowledgment
The author gratefully acknowledges the critical assistance given to him on certain points by Professor William H. Goodyear, W. Harmon Beers and William Warfield; and his indebtedness to Caroline Caffin for compiling the index and to Irving Heyl for several architectural drawings. For some of the illustrations he has put himself under obligations to the following publications, through the courtesy of the Librarian of the Metropolitan Museum of Art—“Histoire de l’Art,” by Perrot et Chipiez; “Assyrian Sculptures,” by Rev. Archibald Paterson; “Monuments Modernes de la Perse,” by Pascal Coste; “Ruins of the Palace of Diocletian at Spalato” by R. Adams, and “The Annual of the British School at Athens.”