Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 194
colours, with stronger pre-dominance of the blue; steel, in Prussian-blue; brass, in a mixture of gamboge andburnt sienna; copper, gamboge and crimson lake. In drawings where no colour is ad-missible as for photographing, or to be reproduced in printing, some conventionalhatchings are used to… … 1 ^^^^^ 7777777777777777^y///////////////A v///////////////^ •/////////////////./////////////////,////////////////A/////////////////>/////////////////•/////////////////.^///////////////////////////////////////////////////.//////////////////////////////////,/////////////////■////////////////A…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
