. Thinking, feeling, doing . Fig. 144. Prometheus. been flat pictures. The production of the effect of ob-jects in relief is not quite so images; Let two pencils be held upright before the eyes in aparity. ( line directly in front of the nose and at about four inches A—7 A 7 Fig. 145. The Cross. Seeing with Two Eyes. 205 apart. When looking at the farther pencil you see twonearer pencils, as in Fig. 146. The image L belongs tothe left eye because it disappears when that eye is closed ; r Crossed Disparity. R belongs to the right condition of the extraimages is c

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. Thinking, feeling, doing . Fig. 144. Prometheus. been flat pictures. The production of the effect of ob-jects in relief is not quite so images; Let two pencils be held upright before the eyes in aparity. ( line directly in front of the nose and at about four inches A—7 A 7 Fig. 145. The Cross. Seeing with Two Eyes. 205 apart. When looking at the farther pencil you see twonearer pencils, as in Fig. 146. The image L belongs tothe left eye because it disappears when that eye is closed ; r Crossed Disparity. R belongs to the right condition of the extraimages is called crossed dis-parity; it is to be rememberedthat objects nearer than thepoint of regard are seen withcrossed disparity. On looking at the nearerpencil, the farther appearsdouble (Fig. 147). By closingone eye it is evident that thefarther pencil is seen with un-crossed disparity. Thus when we look at anypoint, the objects nearer than

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpsychop, bookyear1895