Dec. 17, 1917 
Soil Acidity and the Hydrolytic Ratio in Soils 
663 
Table III .—Total quantities of calcium , iron, and aluminum in soils —Continued 
acid soils— continued 
Laboratory No. 
s 
16. 
1 7 
20 . 
21 , 
22 . 
23 
24. 
27 ' 
28 
Total calcium 
oxid. 
13.384 
12,874 
J 3>678 
15.908 
*2, 505 
14, 268 
l6, 687 
12, 546 
15, 006 
Total iron 
oxik. 
82,131 
109, 221 
96, 851 
79. 531 
82,563 
75.656 
100,571 
65. 721 
55.866 
Totalalumin- 
ium oxid. 
66, 008 
217, 5 2 3 
98,882 
117,478 
131,648 
100, 603 
132,287 
no, 245 
121,890 
ALKALINE SOILS 
3 
4 
5 
8 . 
11 
12 
15 
18 
19 
25 
26 
29 
16, 236 
78,241 
19,926 
83.391 
16,236 
41.631 
3 1 ! 652 
68,601 
15,129 
67.455 
20,582 
73.756 
19, 106 
50,887 
27,IOI 
61, 221 
15,990 
75,403 
18,163 
61,495 
44,217 
63,483 
21,443 
53,553 
17.056 
35,673 
T 55. 0 76 
120, 501 
132,972 
139, 204 
*39,502 
163,434 
129,846 
134,820 
129,359 
127,930 
166,471 
147,943 
rl 3> 958 
Table IV ,—Ratios between total calcium oxid and iron oxid and aluminium oxid in 
soils 
ACID SOILS 
Laboratory No. 
Iron oxid. 
Aluminium 
oxid. 
Iron oxid 
4 -Alumin¬ 
ium 
oxid. 
2 . 
4.78 
2. 82 
7 . Ol 
II. 79 
n.44 
* 3 - 44 
II. 7 A 
6 . 
8. 62 
7. 
6.38 
3 - 36 
0. 20 
7. 06 
7.98 
10. 46 
e. 68 
0.■. 
xo. 
19. 66 
9 - 5 i 
16. 08 
n.97 
25- 38 
14 - 3 1 
12. 38 
T 7 -13 
12.35 
13.96 
14. 03 
8.77 
I?. 
y 
3 - 83 
r. 66 
I A . 
D 
10. 42 
4-93 
16. 90 
7- 23 
7-38 
^ 53 
7 - °5 
7-93 
8. 79 
8. 12 
l6, ... ..4 . ,. 
J 
6 . 14 
8. 48 
7. 08 
c. 00 
17 . 
20 ... 
21 . 
22 . 
6. 60 
27 . 
5 - 30 
6. 03 
5 - 24 
3 - 72 
2 A . 
27 . 
28 . 
