und tiles 1,600

2-1/4-inch round tiles 13,250

Order, also, 25 6-inch sole-tiles, to be used in making small silt-basins.

It should be arranged to have the tiles all on the ground before the work
of ditching commences, so that there may be no delay and consequent danger
to the stability of the banks of the ditches, while waiting for them to
arrive. As has been before stated, it should be especially agreed with the
tile-maker, at the time of making the contract, that every tile should be
perfect;--of uniform shape, and neither too much nor too little burned.

*Staking Out.*--Due consideration having been given to such preliminaries
as are connected with the mapping of the ground, and the arrangement, on
paper, of the drains to be made, the drainer may now return to his field,
and, while awaiting the arrival of his tiles, make the necessary
preparation for the work to be done. The first step is to fix certain
prominent points, which will serve to connect the map with the field, by
actual measurements, and this will very easily be done by the aid of the
stakes which are still standing at the intersections of the 50-foot lines,
which were used in the preliminary levelling.

Commencing at the southwest corner of the field, and measuring toward the
east a distance of 34 feet, set a pole to indicate the position of the
outlet. Next, mark the center of the silt-basin at the proper point, which
will be found by measuring 184 feet up the western boundary, and thence
toward the east 96 feet, on a line parallel with the nearest row of
50-foot stakes. Then, in like manner, fix the points _C1_, _C6_, _C9_,
_C10_, and _C17_, and the angles of the other main lines, marking the
stakes, when placed, to correspond with the same points on the map. Then
stake the angles and the upper ends of the laterals, and mark these stakes
to correspond with the map.

It will greatly facilitate this operation, if the plan of the drains which
is used in the field, from which the horizontal lines should be omitted,
have the intersecting 50-foot lines drawn upon it, so that the
measurements may be made from the nearest points of intersection.(14)

Having staked these guiding points of the drains, it is advisable to
remove all of the 50-foot stakes, as these are of no further use, and
would only cause confusion. It will now be easy to set the remaining
stakes,--placing one at every 50 feet of the laterals, and at the
intersections of all the li