378 
SOILS AND AGRICULTURE OF NORFOLK. 
The other examples are all taken from the “ chalky boulder 
clay ” of Mr. Harmer’s classification, and agree very well with 
each other in general characteristics. They show a gradual 
increase in the amount of clay present as one passes to the 
southward, with a moderately high percentage of chalk, the 
Pulham Market soil alone being deficient. The land is 
difficult to till in wet seasons ; but if well farmed produces 
good crops, of which wheat, beans, and peas are the most 
important. 
It is these soils that do not give best results under the 
four-course rotation. 
The “ sand and gravel ” soils are the poorest in the 
County, and a considerable porportion of them are not under 
cultivation at all but form the waste common land which, 
covered with gorge and bracken, is such a feature of the 
scenery of N.E. Norfolk. 
Table XV. 
Chemical analyses of some sand and gravel soils : — 
Sheringham. 
Edingthorpe. 
N. Walsham. 
c 
a 
u 
Q 
Bixley. 
Thorpe. 
Greasenham. j 
Moisture 
1'45 
•86 
1-54 
1'16 
1-6 
1-7 
1-62 ' 
Organic and loss on 
ignition 
5’2 
2-7 
425 
3'8 
5-02 
6-0 
5 35 
Nitrogen 
•095 
•1 
T16 
•1316 
T54 
•217 
T7| 
Potash . . 
T707 
•2425 
•2134 
•313 
161 
•222 
•11 
Phosphrs. pentoxide 
T01 
•06 
•077 
T02 
T07 
T37 
•09(1 
Calcium and magne- 
sium carbonates . . 
232 
•05 
•58 
1-48 
I’ll 
34 
■61 
Insoluble residue . . 
88T8 
83-7 
89-42 
90-00 
88-5 
85-4 
89-83 
