44 The Wilson Bulletin— No. 103 



9:25 p. m. Total number of species observed, 85; individuals, 

 702. Alexander Wetmore. 



2. — Washington, D. C, to Great Falls, Maryland. Trav- 

 eled by automobile to Great Falls and return, 40 miles; on 

 foot, 10 miles, about Great Falls, on the Maryland side. 

 Character of country traversed ; woodland and thickets, 80 

 per cent ; fields, 20 per cent. Total distance traveled, 50 

 miles. Time in field, G :00 a. m. to 5 :30 p. m. Total number 

 of species observed, 84 ; individuals, 1705. Mrs. Clarence A. 

 Aspinvvall and Miss Marion Pellew. 



3. — Valley of the Potomac River in Virginia, from Diffi- 

 cult Run to Dead Run, and west to ^McLean, \'irginia. Trav- 

 eled by electric car from Washington, D. C, to Bellevue, Xiv- 

 ginia, and from McLean. Virginia, to Washington, D. C, 18 

 miles ; on foot. 8 miles, from Difificult Run along the Potomac 

 to Dead Run, and thence across country to McLean, Vir- 

 ginia. Character of country traversed: woodland and thick- 

 ets, mostly along streams, 65 per cent ; open fields and coun- 

 try roads, 35 per cent. Total distance traveled, 2(3 miles. 

 Time in field, 6 :30 a. m. to fi :00 p. m. Total number of spe- 

 cies observed. 73 ; individuals, 734. Clarence R. Shoemaker. 

 4. — Valley of the Potomac River in ]\Iaryland, from Chain 

 Bridge, D. C, to one mile above Great Falls, ]\Iaryland. 

 Traveled bv electric car from Woodridge, D. C. to Chain 

 Bridge. D. C, and from Great Falls, Maryland, to Wood- 

 ridge, D. C, 30 miles ; on foot. 14 miles, along the Chesa- 

 peake and Ohio Canal from Chain Bridge to one mile above 

 Great Falls. Maryland, with detours to the Potomac River, to 

 Plummer's Lsland, and elsewdiere. Character of country tra- 

 versed ; canal, and towpath, 60 per cent ; woodland and thick- 

 ets, 40 per cent. Total distance traveled. 44 miles. Time in 

 field, 5:10 a. m. to 6:45 p. m. Total number of species ob- 

 served, 74 ; individuals, 870. Douglas C. ]\labbott. 



5. — Potomac Valley on the \'irginia side from Georgetown, 

 D. C. to Chain Bridge, A'irginia ; and on the Maryland side 

 from Chain Bridge, D. C, to Cabin John Bridge, Maryland. 

 Traveled by electric car from Washington, D. C. to George- 



