'igis Harris, Uncolored Prints of Audubon. 29 



72. Empidonax virescens. Acadian Flycatcher. — Breeds over 

 the low ground of both states, and ranges up the river valleys, rarely into 

 the mountains. I have found it in Center County nesting in the same 

 ravine with such species as the Canada Warbler and Solitary Vireo. Scarce 

 in Cape May Co., N. J. Data on twenty-six nests give: average set, 3 (2); 

 average date, June 6 (May 30- July 16). 



73. Empidonax minimus. Least Flycatcher. — Breeds com- 

 monly over the northern half of New Jersey and the mountainous parts 

 of Pennsylvania south to Berks and Center Counties and rarely to Mont- 

 gomery. Data on twenty-one nests give : average set, 4 (3); average date 

 May 30 (May 25- June 27). 



(To be concluded.) 



UNCOLORED PRINTS FROM HAVELL'S ENGRAVINGS 

 OF AUDUBON'S ' BIRDS OF AMERICA'. 



BY HARRY HARRIS. 



Plates II and III. 



Eight uncolored prints of Audubon's folio plates have lately 

 come into the writer's possession, and their examination has led 

 to a closer study of the work of the engraver. A careful comparison 

 of the prints with the corresponding published issues has brought 

 out a few points which may prove of interest, especially as the 

 comparatively scant reference to Robert Havell Jr. found in the 

 literature of American Ornithology perhaps indicates that complete 

 recognition has not been given tins master engraver for his part in 

 immortalizing the genius of Audubon. 



Mr. George Alfred Williams of Summit, N. J., has lately said, 1 

 in a very illuminating review of Havell's career, that to the genius 

 of this man is due much of the extraordinarv artistic success which 



1 Williams, George Alfred. Robert Havell, Junior, Engraver of Audubon's "The Birds 

 of America." The Print-Collector's Quarterly. October, 1916. Houghton, Mifflin Co., 

 Boston. 



