Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 258
three given points in its curved surface:one perpendicularly over &, at the height, h j ; one perpendicu-larly over 5, at the height, s x ; and the other over c, at the height^c I—these lines being drawn at right angles to the chord of thebase, b c. Fromj, through I, draw a line to meet the… … Fig. 294. plane of the base. This line can be proved to be the intersectionof these planes in another way ; from 6, through s, and from j,through X, draw lines meeting at m ; then the point, m, will bein the intersecting line, as is shown in the figure, and also atFig. 293. From/, draw/p, at right…
Carpentry · Architecture
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