rAuk 



18 Harlow, Breeding Birds of Penna. and N. J. [j aD 



give weight to the opinions of others. Serene and placid in dis- 

 position, cheerful and optimistic in temperament, he was fond of 

 the beautiful in nature and art, even of poetry, yet philosophical 

 and analytical and systematic by nature. As a friend, he was 

 sympathetic, generous, steadfast, and intensely loyal. 



NOTES ON THE BREEDING BIRDS OF PENNSYL- 

 VANIA AND NEW JERSEY. 



BY RICHARD C. HARLOW. 



Since the publication of Dr. Witmer Stone's two works: 'The 

 Birds of Eastern Pennsylvania and New Jersey' (1894) and 'The 

 Birds of New Jersey' (1909) the writer has done considerable 

 field work in various parts of both states and portions of every 

 nesting season from 1904 to 1917 have been spent in investigating 

 the breeding habits of the resident or summer resident species. 

 A large amount of data has naturally been collected much of which 

 adds materially to our knowledge of the breeding range and 

 relative abundance of the birds of Pennsylvania and New Jersey. 



Some time ago Dr. Stone urged the writer to publish a summary 

 of his observations making the pertinent remark that "the main 

 trouble with oologists is that they publish altogether too few of 

 their records". It is undoubtedly true that many important 

 nests are found every year about which nothing appears in print and 

 the data concerning them would yield valuable information regard- 

 ing the distribution and time of breeding of the species. 



Acting upon Dr. Stone's suggestion the present paper has been 

 prepared. Under each species are given the number of nests 

 examined; the average number of eggs in a complete set, as well 

 as the extremes, in order to show the range of variation; and the 

 average and extreme dates for complete sets. Additional infor- 

 mation is given under certain species and in the case of rare species 



