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Assheton (R.). Studies in the development of the Rabbit

& the Frog.etc.

[blocks in formation]

5) Beard (8.). The history of a transient newous apparatus

in certain Ichthyopsida. 6) The development & probable function of the Thymus. 7) lwoff (B.). Die Bildung der primären. Keimblätter.be

den wirbelthieren.

8) Howes CG.B). Coracoid of the terrestrial Vertebrata .

9) Gaskell (W.H). Origin of vertebrates.

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