Gould, Lucius D., b. 1814. [from old catalog] · New York, A.J. Bicknell & co. · leaf 84
Fig. 4<. Fi£ 3 … Scale, ih inches - 1fool. Centre of HaiL. Plate 20 Exhibits the continuation of the staircase, shown on Plate 19, to the startingof the second flight. To find the length of the major axis, of the elliptic curve required for thecentre of the mould, at Fig. 1, draw lines from the points A and P,…
Stair building
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