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Classes 23 22 21 20 19 18 17 16 15 14- 13 12 II 10 9 8 7 6 5 4- 3 2 I a. b. c. d. e. f. ^. h. 



DIAGRAMMATIC REPRESENTATION OF THE RESULTS OBTAINED IN THE ATTEMPT TO 



CREATE ALBINIC AND MELANIC RACES BY THE COMBINED INFLUENCE 



OF SELECTIVE AND ENVIRONMENTAL STIMULI 



A.HOEN a CO. BALTIMORE. 



