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adjustment already angle appearance becomes binocular called central spot circle clear colors combined complete condition cones convergence corresponding points course cross defect diagram direction distance distinct double images evident exactly experiment explained external extreme fact fall farther fibers field of view figures front give greater horizontal horopter Illustrations impression inches inclined kind layer left eye lens less light limit look median middle motion move muscles natural nearer necessary normal nose object observer opposite optic optic axes outward parallel passing perception perfect perfectly persons perspective phantom phenomena plane point of sight position primary produce projection rays referred represent result retina retinal images right eye rods rotation screen seen sense shown side single space stereoscope structure surface theory tion true turn unite vertical vision visual visual plane wall whole
Página 269 - New York: D. APPLETON & CO., 72 Fifth Avenue. D. APPLETON & CO.'S PUBLICATIONS.
Página 271 - While constantly occupied upon the anatomical and osseous phases of his subject, he was none the less well acquainted with what literature and history had to say concerning the pygmies. . . . This book ought to be in every divinity school in which man as well as God is studied, and from which missionaries go out to convert the human being of reality and not the man of rhetoric and text-books.