SOILS AND AGRICULTURE OF NORFOLK. 
375 
Table XII. 
Mechanical analysis of some South Norfolk Boulder Clay 
Soils : — 
Wood ton. 
At tleborougli. 
Saham Toney. 
a 
"5) 
TO 
03 
Pulliam Mkt. 
OjJ 
r 5b 
CD 
> 
Soil— 
Stones 
8'9 
32 
4-3 
5*5 
34 
1-4 
Fine gravel 
243 
283 
8-3 
1 41 
2-72 
1*4 
Coarse sand 
39-87 
36-32 
45 9 
43-74 
42-73 
29-03 
Fine sand 
25-13 
20-97 
2405 
20-77 
20-87 
21-15 
Coarse silt 
6’75 
5-72 
301 
CO 
537 
7'95 
Fine silt 
7‘57 
957 
525 
667 
7-17 
9-25 
Clay 
10-05 
io-o 
6-95 
10-5 
11-65 
16-18 
Moisture, organic mtr. 
and loss on ignition 
556 
9 '5 
6-65 
7-18 
6*7 
9-7 
Subsoil — 
Stones 
56 
8-2 
1-2 
4-0 
9-2 
55 
Fine gravel 
2-23 
4-02 
355 
2-1 
2-69 
2-35 
Coarse sand 
40-4 
39-0 
46 "5 
33-92 
47-88 
24-05 
Fine sand 
24-1 
21-47 
20-28 
19-12 
18-59 
17-75 
Coarse silt 
5-93 
5 57 
5-00 
4-87 
5 89 
7-8 
Fine silt 
673 
752 
593 
937 
6-6 
12-25 
Clay 
11-4 
13-05 
9-76 
14-0 
11-35 
18-0 
Moisture, organic mtr. 
and loss on ignition 
5-15 
6-45 
555 
7"65 
5-27 
9-7 
The boulder clay covers all the centre and south ot the 
County, and nearly three-quarters of the soils of Norfolk are 
derived from it. It varies very much in character, passing 
through all types, from a sandy marl in the north to a fairly 
heavy clay in the south. Mr. Harmer divides the East 
Anglian boulder clay into three classes : — 
