CONTENTS.
Fences on the sides of roadsDisadvantages of them
PAGE. PAGE.
. 1/4 Circumstances necessary to be attendedibid. to in them . •
PAGE.
Manner in which they are formed . ibid.
Reason of their variation of quality . ibid.
Cause of their differt/-. degrees of fruitfulness ibid.They are injured by some substances . 1/7
Kinds which have this effect . . ibid.
Reasons why those which are apparentlysimilar, turn out different on theirbeing broken up . . ibid.
Causes of the contradictory facts respecting,
in agriculture . . .178
Causes of soils producing one sort of crop in
preference to another . . ibid.
Depth and quality of sub-soils , . ibid.
The cause of differences in 'them . . ibid.
Causes of the difficulty of ascertaining . ibid.Methods in which attempted . . 179
Chemical analysis . , . ibid.
Natural appearances . . ibid.
Nature of plants produced by • ibid.
Advantages of each . . ib d.
Necessary to have recourse to experience ibid.Have been described under a variety of use-less local terms . .180
May be distinguished under a few heads . ibid.CLAYEY SOILS . . . ibid.
Causes of the differences of . . ibid.
Circumstances to be attended to in improv-ing them . . .181
Applications most useful for . . 182
Methods of laying them on . . ibid.
Advantage of proper modes of tillage in .183Necessary to be kept as dry 2 s possible at all
seasons . . . ibid.
Advantages of this practice in different
cases . . . ibid.
Circumstances to be attended to in their til-lage . . . ibid.
Means of ascertaining their nature . . 184
LOAMY SOILS . . . ibid.
Admit of variety . . . ibid.
Substances of which composed . ibid.
Manner in which they recede from clays . ibid.Circumstances on which their lightness and
friability depend . . . 1S5
On which their colours depend . . ibid.
Admit of improvement more readily than clays ibid.
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Applications proper in this view . . tS 5
Reasons for their being more easy of tillage . 18<5Not so disposed to the production of weeds . ibid.CHALKY SOILS . -137
Circumstances which produce differences in
them . . . ibid.
State of the calcareous matter incorporated
with them, must be attended to . ibid.The combination of other substances with
the calcareous, alters its effects . ibid.In union with magnesia, is prejudicial to
vegetation . . .188
Causes which form distinctions in . ibid.
Applications suitable for improving them . I 89Reasons why much strength of draught is
required in ... 1Q0
Great attention to the tools employed on,
always necessary . . ibid.
SANDY SOILS . . . ibid.
Mode of formation of ibid.
On what their variation depends . . ibid.
Why less benefited than others by heat and
moisture . . . 191
Circumstances to be attended to in improv-ing them . . . ibid.
Applications proper in different cases . ibid.Reason why different applications are use-ful in different districts . . ibid.
Means of supplying them with vegetable
matter . . . ibid.
Methods in which manures may be applied
Thin soils easily cultivated . . ibid.
Causes of the disadvantages of . . ibid.
GRAVELLY SOILS . . ibid.
Materials of which composed, various . ibid.
Different arrangements of . . 193
Why subject to burn . . ibid.
Defects of, how rtmoved . . ibid.
Applications proper for in different cases . ibid.PEATY OR MOSSY SOILS . . Ip4
Met with extensively in some districts . ibid.Causes of the varieties of . ibid.
Stratified order of . . . ibid.
Cause of great differences in . .105
Highly retentive of water . . ibid.
Injured by its evaporation . - . 1 ()C‘