. The chordates. Chordata. Fig. 172. Diagrams illustrating Boveri's theory that the paired eyes of verte- brates have evolved from lateral outgrowths of the brain-wall. The theory accords well with embryologic evidence. (Courtesy, Neal and Band: "Chordate Anatomy," Philadelphia, The Blakiston Company.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : Bla

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. The chordates. Chordata. Fig. 172. Diagrams illustrating Boveri's theory that the paired eyes of verte- brates have evolved from lateral outgrowths of the brain-wall. The theory accords well with embryologic evidence. (Courtesy, Neal and Band: "Chordate Anatomy," Philadelphia, The Blakiston Company.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : Blakiston

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