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 373
.^^^j-'j^^''^^ providing more space for graves, and the confidence in the gallflies, consistency of the rock which practice had given the fossors, led them to adopt this method of enlarging the cemetery. They appear to have commenced with the ambulacnwi B, and to have continued the work along C… … Fig. -Second Period of Excnvntion. These cuhicula were evidently excavated in anticipation of a much greater depression of the floor of the ambiilacntm, for we now enter them by descending some steps, whereas we have
Catacombs · Christian art and symbolism
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