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 97
.., from the points 1, 2, 3...on the line C E, with radii equal to the generating ciicle, describe arcs ; 76 GEO^klETEICAL PEOBLEMS. from tlie points 1^ 2^, 3, 4, 5 on the line B A, and with radii eqnal snc-cessively to the chords D 1, D 2, D 3, D 4, D 5, describe arcs cutting thepreceding, and the… … 7\ ^S\ and draw the chord 0 1, 0 2,0 3, &c.; lay off on the base0 V, V 2^, 2^ 3\ ..., equal re-spectively to the length of oneof the divisions of the halfcircle 0 1; draw through thepoints 1^, 2, 3 lines par-allel to the chords 0 1, 0 2,0 3 ....; the intersections I,. of these lines are centres…
