70 



THE OOLOGIST 



ly covered by additional lining ma- 

 terial. 



20. June 11, 1902, Wissinoming, Phil- 

 adelphia County, Pa. — One naked 

 young in Yellow Warbler's nest con- 

 taining one naked nestling of the own- 

 er and of the same age apparently. 



21. May 8, 1903, Frankford, Philadel- 

 phia County, Pa. — One slightly incu- 

 bated egg in a Song Sparrow's nest of 

 three eggs of the owner and all simi- 

 larly incubated. 



22. May 13, 1904, Rockledge, Mont- 

 gomery County, Pa. — One fresh egg in 

 empty, deserted Song Sparrow's nest. 



23. May 29, 1905, Torresdale, Phila- 

 delphia County, Pa. — One fresh egg in 

 Red-eyed Vireo's nest containing two 

 fresh eggs of the owner. 



24. May 29, 1905, same locality as 

 above. — One freshly broken egg in 

 Cardinal's nest containing one fresh 

 egg of the owner. 



25. April 25, 1906, Torresdale. Phil- 

 adelphia County, Pa. — One fresh egg 

 In Cardinal's nest containing three 

 fresh eggs of the owner. 



26. May 19, 1906, Holmesburg,Phila- 

 delphia County, Pa. — One slightly in- 

 cubated egg in Yellow Warbler's nest 

 containing three slightly incubated 

 eggs of the owner. 



27. May 25, 1906, same locality as 

 last. — One egg, incubation started, in 

 Yellow Warbler's nest containing four 

 eggs of the owner, incubation all be- 

 gun. 



28. June 5, 1906, Torresdale, Phila- 

 delphia County, Pa. — ^One half-grown 

 young in nest of Yellow Warbler con- 

 taining three half-grown nestlings of 

 the owner. The worthless Molothrus 

 was removed. 



29. June 5, same locality as preced- 

 ing. — One nestling about half grown 

 in Yellow Warbler's nest containing 

 a rotten egg and three young of about 

 the same age, of the owner; I remov- 

 ed the young parsite. 



30. May 23, 1907, Rockledge, Mont- 

 gomery County, Pa. — One highly in- 

 cubated egg in Cardinal's nest con- 

 taining three eggs of the owner with 

 large embryos. 



31. May 23, 1907, Bustleton, Phila- 

 delphia County, Pa. — One fresh egg in 

 White-eyed Vireo's nest containing 

 one fresh egg of the owner. 



32. May 28, 1907, Torresdale, Phila- 

 delphia County, Pa.- — One fresh egg in 

 Yellow Warbler's nest containing four 

 fresh eggs of the owner. 



33. May 25, 1908, Blue Grass, same 

 county as last. — One fresh egg in an 

 empty Field Sparrow's nest; nest evi- 

 dently deserted. 



34. June 1, 1908, Rockledge, Mont- 

 gomery County, Pa. — One fresh egg In 

 Song Sparrow's nest containing four 

 fresh eggs of the owner. 



35. June 10, 1908, Holmesburg, Phil- 

 adelphia County, Pa. — One slightly in- 

 cubated egg in Red-eyed Vireo's nest 

 containing three eggs of the owner, 

 all also in about the same state of in- 

 cubation. 



36. June 13, 1908, Harpers. Mont- 

 gomery County, Pa.— One slightly in- 

 cubated egg in Red-eyed Vireo's nest 

 containing two slightly incubated 

 eggs of the owner. 



37. July 1, 1908, Chestnut Hill, Phil- 

 adelphia County, Pa. — One fresh egg 

 in Wood Thrush's nest containing two 

 fresh eggs of the owner. 



38. May 5, 1909, Frankford, this 

 county. — One fresh egg in Song Spar- 

 row's nest containing three fresh eggs 

 of the owner. 



39. May 11. 1909, Andalusia, Bucks 

 County, Pa. — One egg incubation start- 

 ed in Cardinal's nest containing two 

 eggs of the owner with incubation 

 about begun. 



40. May 13, 1909, Pensauken, Cam- 

 dem County, N. J. — One slightly incu- 

 bated egg in Song Sparrow's nest con- 

 taining three eggs of the owner, In 



