The fΕtal membranes of the marsupials: T
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Dr. Henry F. Osborn
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Article
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1887
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John Wiley and Sons
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English
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THE observations' upon the advanced condition of the f e t a l membranes of Didclphys Virgiizin7za, which are here recorded, were made during the spring of 1887, before I learned of the complete success attending Selcnka's experiments in the artificial rcnring of this marsupial. After my own repeate