404 
Process of Warping. 
The most likely, in my mind, is that it arises from the action of 
the tide on the immense and almost hidden beds of soil which 
form the bottom of that large estuary the Hmnber. It appears, 
however, that the warp is full of seeds of different sorts, more par- 
ticularly the white clover, which it grows in arreat abundance, and 
quite naturally. The quantity of warp in the water differs con- 
siderably. There is more in the water during fine and dry 
weather, and the deposit is greater when there is no wind. 
It is highly advisable, if possible, to avoid finishing the warping 
of a compartment during the very fine and hot weather of June 
and July ; for the tides are small at that period of the year, and 
are apt to be strongly impregnated with saline particles, which, 
being left in the warp, have a very injurious effect in retarding 
vegetation. 
The expense of warping cannot be laid down with any certainty, 
as the different compartments vary so much. When the land to 
be warped is very low, the banks require to be so much higher ; 
and the internal works are very expensive, should the general sur- 
face of the land be irregular. The main drain, which now extends 
a long way (between 5 and 6 miles), requires a great deal of 
attention, and consequent expense. The price paid under the 
Act of Parliament was 21Z. per acre for the twice warping, but it 
has been found quite low enough. 
There is a great difference between the flow and the ebb of the 
tide in the river Ouse and the neighbouring rivers, the flow 
only taking three hours, consequently running with great rapidity, 
and the ebb taking the remaining nine hours. The tides fre- 
quently flow as much as from 18 to 22 feet. 
There seem to be no parallel instances of any improvements of 
the sort out of this district. Many and large tracts of land ad- 
jacent to rivers are occasionally benefited by the deposit left by 
land-floods, though small. The fertility of the lands adjoining 
the Nile depends upon its periodical floods ; and immense de- 
posits are occasionally made, consequent to a breakage of the 
banks of the Mississippi ; but they are entirely from floods, and 
not from the action of the tides. 
The general benefit to the country cannot but be very apparent, 
it having created a steady demand for labour throughout the whole 
of the district where these improvements have been carried on. 
Between 3000 and 4000 acres of land have been brought into a 
state of cultivation ; and where formerly was a morass may now 
be seen the finest crops of wheat, clover, and potatoes. The ori- 
ginal rent was in many instances nothing — now a rent is received 
of from 35s. to 50s. per acre. 
The most general course pursued in the cultivation of the newly- 
warped land is to grip it every 4 or 5 yards, throwing the soil 
