A dictionary of architecture and building : biographical, historical, and descriptive (1902)
Sturgis, Russell, 1836-1909 · New York : The Macmillan company · leaf 563
Fig. 59 (Plans).(/) One e(imponent is semicircular and theother semielliptical, but of wider span, theheights being equal; or both may be semi-elliptical. … Fig. go (Plan). III. Oblique Vaults. (a) Figure 30. With straight axes and com-posed of equal barrel vaults, or of unequal, onebeing semicircular and the other semielliptical.
Architecture · Architects
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