The American house carpenter: a treatise upon architecture, cornices and mouldings, framing, doors, windows and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 129
Fig. 131. ters of the required ellipse. To describe the curve by intersec-tion of lines, proceed as directed at Art. 118 and note; by atrammel, see Art. 125 ; and to find the foci, in order to describe itwith a string, see Art. 115. … d \ ^ a Fig. 133 234.—Fig. 132 to 139 exhibit various modifications of theGrecian ovolo, sometimes called echinus. Fig. 132 to 136 eire MOULDINGS, CORNICES, &C. 113
Carpentry · Architecture
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