BIG SPRING PRAIRIE. 



35 



Soil No. 4. Clay mixed with sand, taken from 

 edge of ditch at south end of prairie. 



"Weight undried 20 lb. 



Weight dried 16 lb. 



Loss in weight 



Loss % 



Loss in volume slight. 



4 lb. 



20 % 



Soil No. 5. Taken from field E. of Map II. 



Weight of wet soil, drained 24 hours 72 oz. 



Weight of dry soil ■ 32 oz. 



Loss in weight 40 oz. 



Loss /o 55 «lo 



Volume of wet soil , 4 pt. 



Volume of dry soil 2i pt. 



Loss in volume 1 2 pt. 



Loss % , . 372" %. 



Volume of dry soil 2^ pt. 



Volume of ash after burning li pt. 



Loss in volume 1^ pt. 



Loss% 50 % 



