Keywords: Origin of Vertebrates Fig 038.png Fig 38 ”The Retina of Musca After Berger Br brain; O n optic nerve; n l o g nuclear layer of ganglion of optic nerve; m l molecular layer Punktsubstanz ; n l r g i and n l r g o inner and outer nuclear layers of the ganglion of the retina; f br r terminal fibre-layer of retina; r layer of retinal end-cells indicated only 1908 The Origin of Vertebrates https //archive org/details/originofvertebra1908gask Walter Holbrook Gaskell PD-old-auto-1923 1914 Origin of Vertebrates book Musca Insect eyes |