Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor (1866)
Worthen, William Ezra, 1819-1897, [from old catalog] ed, Appleton, firm, publishers, New York. (1866. D. Appleton & co.) [from old catalog] · New York, D. Appleton and company · leaf 76
cular; the intersection of the two perpendiculars at a willbe the centre of the required arc. Prob. XXYIII.—To connect two jparallel lines hy a reversed curve conh-posed of two arcs of equal radiiis^ and tangent to the lines at given points^as at A and B (fig. 118). Join A B, and divide it into two… … Fi?. lis. Fig. 119. Prob. XXIX.—To join two given points^ as A and B (fig. 119), in twogiven parallel lines ly a reversed cuicve of two equal arcs, whose centres liein the parallels. Join A B, and divide it in equal parts at C, as above. Bisect also A Cand B C by perpendiculars ; the intersections…
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