82 General Notes. [j" n 



made to collect any of these birds, though one specimen was brought in to 

 me, which gave an opportunity to clinch the previously made (field) diag- 

 nosis. — Ada B. Copeland, Grand Junction, Colo. 



Concerning Brewster's Warbler. — Additional notes on Brewster's 

 Warbler in the July Auk (pp. 481 to 482) by Walter Faxon have much 

 interest. In reading them I notice that he has not touched on one aspect 

 which may not be clear to those unfamiliar with the laws of alternative 

 inheritance. 



Supposing, as we do, that where as Brewster's Warbler is the dominant, 

 Lawrence's is the recessive hybrid, it could not be obtained from a cross 

 in which one of the parents was a pure-lineage bird of either species, as 

 the white under parts of Vermivora chrysoplera or the lack of throat 

 patch of pinus would dominate in every such case. The comparative 

 abundance of chrysoptera in the region under discussion makes it probable 

 that the Golden-wings observed mated were pure. 



Judicious shooting of chrysoptera over the leucobronchialis locality 

 would probably induce sufficient leucobronchialis interbreeding, so that we 

 would have the final chapter in this interesting colony; an heroic meas- 

 ure perhaps, but doubtless more specimens are frequently taken with less 

 return to science. To interfere with pinus would be unwise, as the spo- 

 radic occurrence of that species in the Golden-wing's range places it in the 

 position of the goose that layed the golden eggs. — J. T. Nichols, New 

 York, N. Y. 



Brewster's Warbler in Pennsylvania. — Noticing the references to 

 Brewster's Warbler ( Verminora leucobronchialis) in Massachusetts in the 

 October number of ' The Auk ' I am reminded that its occurrence in Penn- 

 sylvania in May, 1916, has not been recorded in this publication. On 

 May 20, 1916, a male specimen was observed on the north shore of Pocono 

 Lake, Monroe Co., Pa., by Messrs. Wm. L. Baily, John Carter, Samuel 

 Scoville, J. Fletcher Street and the writer. The bird was feeding among 

 briars and other low bushes in an overgrown clearing in woods bordering 

 an alder swamp, and was so accommodating as to allow us an unlimited 

 observation at close range. — G. H. Stuart 3rd, Philadelphia, Pa. 



Blackpoll Warbler Lingering in Mass. — I hacL. fought that the 

 climax of the most backward spring migration I have ever known had come 

 when I heard singing, and subsequently saw at close range, a Blackpoll 

 Warbler in Cambridge Common on June 25 of this year, eighteen days 

 later than any record in Brewster's ' Birds of the Cambridge Region.' 

 However, on July 7 I observed one singing on Quarry Point, Cohasset, 

 Mass., and subsequently recorded him regularly, though with decreasing 

 frequency during August, as he sang less and less, and was practically 

 undiscoverable when not singing, in spite of the fact that he appeared to 



