120 Bulletin 1, Biological Society of Washington, 1918. 



B. 



Bailys Corners— Baileys Cross- 

 roads. 



Baileys Crossroads, SW, M 10. 



Balls Crossroads — Ballston. 



Balls Hill, NW, F 20. 



Ballston, SW, O 5. 



Barcroft, SW, O 9b. 



Barkers Crossroads, SW, D 22. 



Barracks, see under Building. 



Basin, see under Water. 



Bathing Beach (on Tidal Basin), 

 SE, C 5a. 



Battery, see under Fort. 



Bay, see under Water. 



Beane, NW, N 9. 



Bellaire, SW, P 5d. 



Belle Haven, an old name for 

 Alexandria (1669). 



Belleview, NW, A 17. 



Bellevue, NW, C 12. 



Bellmont — Warwick. 



Bell's Mill, NW, J 9. 



Beltsville, NE, Q 7. 



Bench marks (altitudes in black 

 type). 



15 SE, B 4 133 SW, P 11 



16 SE, G 22 134 NW, A 13 

 21 SE.OP 1 135 NW, A 13 

 30 SW, S 11 142 NW, A 12 

 31SE.A12 145SW.T7 

 36 SE, A 12 150 NW, A 12 

 46SW,T11 150SE,R5 



46 NW, O 22 152 SW, R 3 



47 SE, C 16 158 SE, S 5 



52 NE, N 17 159 NW, A 12 



53 NE, N 16 165 NW, L 18 

 53 NE, O 14 171 NW, A 12 

 55 SW, P 16 182 NE, Q 5 



61 NW, L 16 190 SW, Q 3 

 62NW,L17 191SE,T5 



62 SW, S3 193SW.R13 

 66 NE, P 12 205 NE, G 18 

 69 NW, J 16 222 SW, R 3 

 77 NW, 1 16 222 SW, R 4 

 85 NW, 1 16 230 NW, M 20 

 93 NW, 1 16 239 SE, P 22 

 101NE,Q8 241SE.L22 

 102NW.H16 244SE.R21 

 109NW.H16 246 SE, 23 

 117NW,H16 249SE.R18 

 118NW.G16 252SE.T13 

 119NW.B14 266SE.Q16 

 119NW.G16 267SW.P3 

 119NW.E15 267NW.K20 

 120NW, F16 268SE.T14 

 121 NW, B 14 275 NW, J 19 

 126NW.A13 279 NE, N3 



Bench marks — Continued. 

 285NW.H21 374 SW, A 11 

 289 SW, B 17 399 SW, F 3 

 300 NW, Q 18 403 SW, N 3 

 318 SW, B 10 414 NE, L 1 

 323 SW, A 17 421 SW, C 4 

 333 NW, F 22 429 SW, E 2 

 335 SW, B 9 450 SW, D 1 

 362 SW, C 6 459 NE, B 6 

 364 SW, O 3 476 SW, C 2 

 366 NW, F 22 483 NW, B 23 

 Benning, SE, MN 3 

 Benning Race Course, SE, LM 2. 

 Berry's Woods, NE, G 22a. 

 Berwyn, NE, O 12, 13. 

 Berwvn Heights, NE, PQ 13. 

 Bethesda, NW, Q 14. 

 Bladensburg, NE, N 20. 

 Blithewood P. O., NE, R 21. 

 Bluemont Junction, SW, M 7. 

 Bolivar, SW, P 5c. 

 Bon Air, SW, M 7. 

 Bosford Camp, SW, L 11a. 

 Boulevard Heights, SE, N 7. 

 Boundary — Florida Avenue. 

 Boundary Line, Alexandria and 

 Fairfax Counties, Virginia. 



NW, N 21 to L 23. 



SW, L 1 to I 4 to T 14. 

 Boundary Line, District of Co- 

 lumbia and Maryland. 



NW, T 15 to L 23. 



NE, C 13 to A 15 and N 23. 



SE, N 1 to Q 4 and C 18. 

 Boundary Line, District of Co- 

 lumbia and Virginia. 



NW, N 21 to P 23. 



SW, P 1 to T 5. 



SE, A 5 to C 18. 

 Boundary Line, Maryland and 

 Virginia. 



NW, A 8 to N 21. 



SE, C 18 to B 23. 

 Boundary Line, Montgomery and 

 Prince Georges Counties, Md. 



NE, O 1 to F 16. 

 Bradbury Heights. 



SE, N 7. 

 Braddock. 



SE, A 14. 



SW, T 14. 

 Braddock Heights — Braddock. 

 Braddock Rock, SE, B 4. 

 Bradley Hills Park, NW, A 12. 

 Boundary Stones. 



Northwest Side of District. 



1 SW, J 2. 



2 SW, L 1. 



