A dictionary of architecture and building; biographical, historical and descriptive (1901)
Sturgis, Russell, 1836-1909 · New York, Macmillan · leaf 565
Fig. flO (Plam). III. Oblique Vaults. (a) Figure 30. With straight axes and com-posed of equal barrel vaults, or of unequal, onebeing semicircular and the other semieUiptical. … (b) An annular vaidt intersected by a conicalvault, the centre of tlie annulus being the apexof the cone (Fig. 31). 955 VAULT (c) An annular vault intersected by an under-pitch vault (Fig. 32).
Architecture
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