titles. Aves 37 
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707. Ulrich, F. Zur Kenntnis der Luftsacke bei Diomedea exulans 
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708. Ussher, R. J. Birds met with on Connaught Lakes. Irish Natural, 
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709. . Birds and their breeding habits. Rep. Belfast Club (2) v, 
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710. Valle, A. Note ornitologiche. Boll. Soc. Adriat. ix [1885], 
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711. Vallentin, Rupert. On the rock-marking done by Penguins’ feet. 
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712. Vallon, G. Escursioni ornitologiche nel Friuli. Avicula ix, pp. 18- 
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713. Vanhoffen, E. Bericht iiber die bei der deutschen Sfidpolarexpe- 
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722. Wheelock, J. G. Regurgitative feeding of nestlings. Auk xxii, 
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[ Sph e nisei fo rmes. ] 
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pp. 140 & 141 
