43 



Table 3j. — Composition oj Carringion silt loam. 



1—6 7—12 U— -M 



inches inches inches 



percent per cent perKiil 



1. Kansan. 



SiOj 69.59 71.02 72.45 



AI0O3 11.09 11.35 11.% 



FeoO:{ 3.55 3.81 4.40 



MgO 0.81 0.84 O.S.^ 



CaO 1.13 1.14 1.02 



XajO 1.20 1.36 1.37 



K2O 1.76 1.84 1.90 



TiO- 0.64 0.64 O.M 



Pi.O.-. 0.23 0.20 0.15 



CO- 08 0.0-' {).()<, 



\'olatilc matter 10.52 8.58 6.07 



2. Lativ Wiscon.'^ix. 



SiO:: 72.89 73.62 75.24 



AI2O:! 10.46 10.87 1 1.35 



Fe203 2.99 3.21 3.42 



MgO 0.72 0.74 0.88 



CaO 1.24 1.18 124 



Xa-.O 139 135 1.33 



K2O 1.66 1.74 1.86 



TiOo 0.50 0.52 0.54 



P20.r; 0.18 0.17 0.14 



COo 0.07 0.05 0.13 



\'c .latilc matter 9.38 7.80 5.34 



Table j6. — Composition of Forgo silt loam. 



1—6 7— IJ 13 — 24 



inches inches inches 



l)er cent per cent per cent 



1. Kaxsan. 



SiOo 59.05 65 81 71.71 



AUb-,. 10.29 11.46 12.43 



FeoO.-? 3.37 3.79 4.21 



MgO 1.02 1.06 1.21 



CaO 2.34 2.08 1.55 



Na-.0 1.31 1.48 1.45 



KoO 1.57 1.64 1.83 



TiOo , 0.60 0.66 0.73 



P.,05 0.31 24 0.19 



002 0.30 0.20 0.06 



Volatile matter 20.34 12.12 5.41 



2. [,.\TK Wisconsin. 



SiO-. 68.08 70.42 72.02 



AUb-x 10.18 10.62 11.57 



FeoO ; 3.21 3.21 3.68 



MgO 1.07 1.08 1.23 



CaO 1.97 1.84 1.86 



XaoO 1.18 1.29 1.27 



K-O 1.60 1.68 1.71 



Ti'O- 0.60 0.60 0.()() 



PoOr, 0.23 0.18 0.15 



CO., 0.49 0,57 0.54 



X'ofatile matter 11.68 9.61 6.43 



