Litchfield, Isaac W, Massachusetts Institute of Technology. Society of Arts · Boston, Mass. : The Society · leaf 77
Science Conspectus 6.5 **8**"Vr m '%.. X … Microphotographs of cross sections through the eye region of fish embryos. The upper'photograph shows an eye on one side of the brain but none on the other. The lower figure shows a perfect crystal line- lens on an eyeless side.
Science
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
