. Concerning evolution. Evolution. FIGURE NO. 10 EVOLUTION AND DEVELOPMENT OF NERVE-CELLS (After Ramon y Cajal) A-D, nerve-cells or neurons from four Vertebrate animals:—A, a fish, B, a reptile, C, a bird, D, a mam- mal. The evolution is marked by increased complexity in the branching of the nerve-fibres. But the figures a-e show five stages in the individual development of the neurons of a bird. The individual development re- capitulates the racial evolution. 82. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colora
. Concerning evolution. Evolution. FIGURE NO. 10 EVOLUTION AND DEVELOPMENT OF NERVE-CELLS (After Ramon y Cajal) A-D, nerve-cells or neurons from four Vertebrate animals:—A, a fish, B, a reptile, C, a bird, D, a mam- mal. The evolution is marked by increased complexity in the branching of the nerve-fibres. But the figures a-e show five stages in the individual development of the neurons of a bird. The individual development re- capitulates the racial evolution. 82. 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 Thomson, J. Arthur (John Arthur), 1861-1933; Dwight Harrington Terry Foundation. New Haven, Yale University Press; [etc. , etc. ]
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Keywords: ., bookauthorthomsonjarthurjohnart, bookcentury1900, bookdecade1920
