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Since ascertained to inhabit North America, while one hundred and fifty have been removed from the former list as being extralimital, invalid or otherwise untenable. Of whatever part the author may have taken in remodelling the list, it would be Obviously indelicate to speak. But he cannot refrain from alluding to the Signal services Of reform rendered by Mr. Allen, Of Cambridge, whose stauch advocacy, under circum stances that might have excused fiinching, did so much to precipitate the changes, long while progressing and inevi table, for which the time was at length at hand. Nor would this allusion be entirely just, did he not in the same connection refer to the thorough revision now making by Prof. Baird him self, with the cooperation Of Dr. Brewer and Mr. Ridgway, the results Of which are about to appear in what promises to be one Of the greatest monuments ever erected to American ornithology. The notable concordance Of the several writings in question, an agreement the more gratifying because a short time since it might have been considered impossible, marks an important period in the history Of the science. The outlook promises well, when different premises lead up to the same conclusions, and conﬂicting views are reconciled.
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