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6 



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14 Andrews, Will. 1900. The Migration of Swifts. Nature, Vol. 62. No. 1610. 



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16 Saunders, fl. E. 1900. Nesting Habits of the Cerulean Warbler [Dendroica 



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17 Hornung, Victor. 1900. Ein Erinnerungsblatt ((9ar?Äs yZöWC^mws). Zool. 



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18 Deal, F. E. L. 1900. Food of the Bobolink, Blackbirds and Grackles [Ic- 



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20 Tschusi zu Sehmidlioffen, Vict. Ritter von. 1900. Sibirische Tannenheher 



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21 Swain, J. Merton. 1900. Prairie Homed Larks [Otocorys alpestris praticola) 



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24 Macpherson, H. A. 1900. The Bearded Tit [Farm hiarnncus]: a Correction 



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25 Read, Eob. H. 1900. Nesting of the Common Sparrow (Passer domesticus). 



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26Loisel, Gust. 1900. Le noyau dans la division directe des spermatogonies 

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27 Loisel, Gust. 1899. La préspermatogénèse chez le moineau. Avec figs. C. 



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28 Paterson , John. 1900. Chiffchaff [Phylloscopus rufns) in »Clyde(f. Ann. 



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29 Parrot, C. 1900. Fhylhscoptis rufus sylvestris Meisner und die Verbreitung 



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30 Butterfield , W. Ruskin. 1900. Occurrence of the Melodious Warbler 



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43231 Howe, Reginald Huber, jr. 1900. The Rough-winged Swallow [Stelgido- 

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17. XL 1900. 



