85 BULLETIN No. 37 



timed so as to take the various species in the midst of their 

 breedinji season. Dividing and simphfying the labor wherever 

 practicable, I still found the work very exacting and not to be 

 again attempted without serious thought. 



\n blocking out a tract one square mile in extent, 1 chose a 

 piece of land believed to be in no way inferior or superior in 

 point of attractiveness to the surrounding country. It is diver- 

 sified enough to contain hill, ravine, swamp, creek, wood, 

 thicket, clearing, meadow, cultivated field, orchard, lawn, rail- 

 road, street, and a fair representation of the fauna and flora at 

 large. It is moreover, accessible to my home, and land over 

 which 1 am free to tramp. Tracings were made from an excel- 

 lent township and property map, and exact boundaries estab- 

 lished. It is an irregular square, not quite the same ground as 

 that described in my Warbler Census (Osprev, T'o/. //, p. 48.), 

 extending more to the north and west, consequently less to the 

 south and east. 



The southern line runs a few rods beyond Paoli road and 

 continues through the middle of the village along Berwyn ave- 

 nue. To the east, it begins at a point on the Pennsylvania 

 railroad just below the Philadelphia and Lancaster turnpike 

 bridge and runs north parallel with Warren avenue to the old 

 Lancaster road, thence along the hillside just east of and parallel 

 with the most direct road to Valley Forge, locally known as 

 "contention lane." On the north it extends into the Great 

 Chester Valley, being bound by the State and Howeltown roads 

 and at two points slightly beyond them. The western bound- 

 ary averages a few rods beyond the Mahaffey road. The 

 southeast and southwest corners are clipped, and a great inden- 

 tation made in the northern line just west of the centre; other- 

 wise it is as previously stated, a rough square. 



Two railroads, one of four and the other of two tracks, run 

 through it from east to west; and it contains a population of 

 six hundred and twenty-five souls. About one-tenth of the 

 territory lies in Easttown township and the remainder in Tredyf- 

 frin township, extreme eastern part of Chester county, twelve 

 miles from West Chester and seventeen miles from Philadel- 

 phia city hall. Approximate latitude, 40 degrees. Approxi- 



