Roma sotterranea : or some account of the Roman catacombs, especially of the cemetery of San Callisto (1869)
Northcote, J. Spencer (James Spencer), 1821-1907, Brownlow, W. R · London : Longmans, Green, Reader, and Dyer · leaf 366
33 6 Roma Sotterj^anca. diately beneath the vast ruined monument ah-eady described. '' The floor of the gallery <I> is not more than twenty feet below the surface of the soil, and in some places not above ten ; so that had it been continued on the same plane, it must have run out into the open air,… … Fig. 44. — Section of the Cemctety of St. Callixtns. specimen of a gallery being excavated so near the surface. The stratum in which this gallery was formed is composed of a friable tufa g?'afiulare, of a gray colour, and full of amphi- gene, a kind of garnet, and here and there black augite. This…
Catacombs · Christian art and symbolism
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
