78 



BROOKLYN BOTANIC GARDEN MEMOIRS 



B 



bllt= .005- 



.05 mm 



^ 



fine SBni = .05-.Z5 



Coarse sand =.2S-loo 



Wwmus mmti wi\V\ coar^t sani 



wm^us mi/ei uji\r\ £^rve sarvi 



HumUvS 



F\r>e Sjni mixej ooitn'im. 



Figure 27. (a) Subsoil under open Downs at edge of Hither Woods; 15% fine yellow- 

 sand, 85% coarse yellow sand, (b) Subsoil under open Downs between Fort Pond and 

 Great Pond; 16% fine sand and silt, 84% coarse sand, (c) Symbols used to designate 

 size of soil particles in figures 27-30. 



