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IN deep and treqtelt PlOUghing.


entertain no doubt OF the utility Of deep plough.
ing not at once, in our lands in general but bv an
increase Of two three inches at every annual
poughlng until the earth be stirred and puverised m
the depth OF ten twelve inches. Indian corn pant-
ed IN such mass of leosened earth would not, I am
persuaded ever suffer by ordinary droughts Like a
sponge, II would absorb vast quantity Of rain water
ana become reservoir TO supply the ofthat and
all other plants. Nothing is more common IN drv
SUMMER than the rolling OF the leaves of corn and
that circumstance is often mentioned az an evidence
OF the severity OF the drought. This rolling of the
eaVes oi indian corn Is the consequence in part Of
scant manurng, bat still more Of shallow poughing
Few perhaps, are aware of the depths TO which the
roots OF plants VIII penetrate in deeply Ioosened
earth. A gentleman much inclined to agricultural
inquiries and observations, informed me, near fifty
years ago, that seeing some men digging we'll in
hollow place planted with Indian corn then al its
iul growth he stopped to examine how far its roots
had descended, and he traced them to the depth Of
nine ieet. The soil was accumulation Of earth
which had run Or been thrown into the hollow.


Ihe seeds OF the common turHip sown in warm
weather, and on a soil sufficiently moist have known
to vegeate IN about eight and forty hours and in oly
isur or hve days afterwards found the plants had
sent down roots TO the depth of four or five inches


Mr. Pickering's address to the Esser 4g. Soc


Sir John Sinclair gives the following yNaaims re-
SPecfing the proper depth Of ploughing.


l. The depth TO which land ought To be pIouohed
must FIRST be regulated by the depth Of the soil On
thin sols more especially on rocky substratum the
pioughmg must necessarily be shallow but when the
soil whether light Or strong will admit Of it, the plough
ing ought TO be deep.


2 The depth ought likewise to depend on the
means OF improving the soil Tor when the land IS
poor and the means Of enrichng it are scanty the
depth OF ploughing ought to be in proportion to the
quantity OF manure which can be obtained.


.. Deep ploushing is highly advantageous upon ev-
cry soil, excepting those where the substratum is an
ochry sand.


a. 1t is general rule never to plough deep as to
penetrate below tbe soil that was formerly rianursd