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 90
hepoint 5 on the transverseaxis, and the point c onthe conjugate axis, any qrequired number of pointsmay be found. Uh Method (fig. 159). —By the above methodlarge curves may be de-scribed continuously bymeans of a bar m h^ with steel points m, Z, Tc^ riveted into brass slides, adjusted to the… … YO GEOMETEICAL PROBLEMS. and carrying round the point m, tlie curve may be completely described.If desirable, of course, a pen or pencil may be fixed at m. Uh Method (fig. 160).—Given tlie two axes A B, C D ; on the centre C, with A E as radius, describean arc cutting A B at F and G,the foci; fiiL…
