408 



STATE BOARD OF AGRICULTURE 



/ ;2 



C.C. O./A/ ^(^oyV. 



8 



/O // /Z 



Fig. 5. — Titration curves — clay loam soil. 



Curve No. 0. Initial titration curve, Ca(OH)2. 



No. 1. After standing one day, Ca(OH)2. 



No. 2. After standing two days, Ca(OH)2. 



No. 3. Back titration of Ca(OH)2 series with AhCle. 



No. 4. Initial titration curve, AhCU. 



No. 5. After standing one day, AlaCls. 



No. 6. Back titration of AhCle series with Ca(0H)2. 



