A pig embryo with bifid notochord, biaxiate brain and paired hypophyses


  • W. C. George

    1. Department of Anatomy, University of North Carolina, Chapel Hill
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    • The author wishes to acknowledge his indebtedness to Mr. DeArmond Moore for calling attention to the abnormality of the embryo and to Prof. B. F. Knigsbury for his interest and his helpful comments and suggestions. Thanks are due Prof. Myra M. Sampson, Department of Zoology, Smith College, for the loan of the series of sections used by Miss Bishop in her study of the nervous system of a two-headed pig.