STUDIES ON CHROMOSOMES 



ED.ML Nl> U. WILSON 



1'I.ATE 2 



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33 



34 



35 





37 



43 



* 



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38 



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39 



45 



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46 



THE JOUKNAI. OK KXPERIMENTAL ZOOLOGY, VOL. 13, NO. 3. 



Wilson, Del. 



435 



