Double-headed Beings and Other Monsters

  • Ernst Hadorn


Now and then a calf with two heads and six legs will be exhibited at a county or state fair, usually among the sideshows. Monsters of many kinds are known to occur in all sorts of animals and in humans as well. Among laymen, such malformations tend to be regarded as grotesque curiosities or, where human birth defects are involved, as something frightening and tragic. For the scientist, however, such cases of abnormal development represent “experiments of nature”—he wants to learn what has “gone wrong”, hoping thereby to gain a better understanding of the fundamental processes underlying all of development, as well as knowledge of more direct applicability to the medical problems of congenital malformations.


State Fair Spinal Cord Region Direct Applicability Early Gastrula Stage Alpine Newt 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1974

Authors and Affiliations

  • Ernst Hadorn
    • 1
  1. 1.Zoologisch-Vergl., Anatomisches InstitutUniversität ZürichZurichSwitzerland

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