The carpenter's new guide: being a complete book of lines for carpentry and joinery (1850)
Nicholson, Peter, 1765-1844. [from old catalog], Johnston, William, architect. [from old catalog] · Philadelphia, Lippincott, Grambo and co. · leaf 100
et A describe another semicircle whose diameter is c b ; then will the semicircle c e g a b beequal to a vertical section of the globe, standing on k i, passing through its centre at c, whichis the same curve as the rib at C, because w a is equal to c n, and c s bisecting m n Sit rightangles, is… … \
Carpentry
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