1905.] 



On the Retention of Bases by the Soil. 



11 



Table VI.— Hoos Field Soils. 



Calcium Carbonate in Lbs. per Acre. 











Rate of loss 



Plot. 



1868. 



1882. 



1904-5. 



per acre 











per annum. 





Total for Three Depths 



[27 inches). 







lbs. 



. lbs. 



lbs. 



lbs. 



10 





86,800 



63,900 



1000 



4o 



48,431 



40,100 



23,400 



675 



lA 





83,200 



65,700 



760 



4a 



39,100 



25,500 



9,900 



790 



In 





84,300 



67,600 



725 





34,754 



35,400 



17,500 



465 



lc 



42,500 



25,100 



755 



7—2 





49,900 



30,900 



830 



First 9 inches only, reckoned as weighing 2,500,000 lbs. 



lo 





85,750 



58,500 



1185 



4o 



44,500 



36,750 



17,750. 



723 



lA 





81,500 



63,250 



793 





33,500 



21,750 



5,750 



750 



In 





82,500 



64,750 



772 



4n 



32,500 



33,000 



12,000 



554 



lc 





39,500 



22,250 



750 



7—2 





48,000 



28,500 



848 



8o,ooo lis. 















iN 

 iA 



6o,ooolbs. 

 40,000 lbs. 







iO 





















7-2 " 









iC 



20,000 lbs 







4O 









4N 









4A 



1868 1882 1905 



Fig. 2. — Calcium Carbonate, lbs. per acre. Hoos Field. To 27 inches. 



