At the Library of the University of Michigan there is a waxed diptych from the Fayoum, secured for the University by Professor Kelsey while in Egypt in 1919. The leaves of the diptych are of wood, about ll¼ inches long and 8¼ inches wide, slightly hollowed out and coated with black wax on the inner sides. These inner sides are shown in the photographs which accompany this article (Pls. X., XI.). In explanation of the photographs, it should be said that they were taken with the aid of a strong artificial light coming from the left at an angle of 45 degrees. This has caused the incisions and depressions on the wax to reflect the light in such a way that they seem to stand out above the general surface of the wax. Thus the white blotches which appear on the first leaf are really hollows and not projections, as they seem to be in certain lights. It should also be stated that a transcription was made of this leaf before the wax crumbled away, probably owing to unfavourable atmospheric conditions, along the edge of the crack in the lower part of the leaf.