Front Matter
p. 0
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The Sexual Nature of Vegetative or Dichotomous Twins of Arisaema
Schaffner, John H. pp. 149-154
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Emergence of a Mayfly from its Nymphal Skin
Krecker, Frederick H. pp. 155-157
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A New Type of Bryozoan Gizzard, with Remarks on the Genus Buskia
Osburn, Raymond C.; Veth, Ruth M. pp. 158-163
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Habits of the Common Mole : Scalopus aquaticus machrinus, (Rafinesque)
Hanawalt, F. A. pp. 164-169
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A Case of Unhindered Growth of the Incisor Teeth of the Woodchuck
Williams, Stephen R. pp. 170-172
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Back Matter
p. 999
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