. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . Fig. 17 Direct OphthalmoscopyDiagram showing the course of the light rays from the lamp, L, to the mirror, 00,whence they are reflected directly upon the observed retina at BooB. Thence they arereflected through the opening in the mirror, 00, to the observers eye at E. OPHTHALMOSCOPY OF THE VERTEBRATE EYE 29. Fig. 18Relative Position of Observer and Observed in Direct Ophthalmoscopy

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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjecteye, bookyear1917