Free-hand drawing : a manual for teachers and students (1898)
Cross, Anson K. (Anson Kent), 1862-1944 · Boston : Ginn & Company · leaf 109
es must then appear to converge downwards, just as Fig. 25represents them. Fig. 25 is a plane perspective upon an inclinedpicture plane instead of a vertical plane. When the eye is at thestation-point, which for Fig. 25 is about 4^ from the paper, andin a perpendicular to the page erected at the… … K .:
Drawing
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