Transcriber’s Note
Obvious typographical errors and inconsistencies have been silently corrected.
Diffenrences in spelling between index and body have been made consistent as has hyphenation, but other variations in spelling and punctuation remain unchanged.
A number of items in the index are out of order, and some are not present in the text. This has not been changed.
Plate X. in the list of plates has been changed from Sculpture at Shapour to Rock at Shapour to correspond with the image.
The small text of limited legibility within some of the illustrations has been repeated below the image.
A table of contents has been added.