may
stick together, or, at least, have their shape destroyed. Those which are
not sufficiently burned would not withstand the action of the water in the
soil, and should not be used. For the first of these accidents there is no
remedy; for the latter, reburning will be necessary, and under-done tiles
may be left, (or replaced,) in the kiln in the position which they
occupied at the first burning, and the second heat will probably prove
sufficient. There is less danger of unequal burning in circular than in
square kilns. Soft wood is better than hard, as making a better flame. It
should be split fine, and well seasoned.

*Arrangement of the Tilery.*--Such a tilery as is described above should
have a drying shed from 60 to 80 feet long, and from 12 to 18 feet wide.
This shed may be built in the cheapest and roughest manner, the roof being
covered with felting, thatch, or hemlock boards, as economy may suggest.
It should have a tier of drying shelves, (made of slats rather than of
boards,) running the whole length of each side. A narrow, wooden tram-way,
down the middle, to carry a car, by which the green tiles may be taken
from the machine to the shelves, and the dry ones from the shelves to the
kiln, will greatly lessen the cost of handling.

The pug-mill and tile-machine, as well as the clay pit and the
washing-mill, should be at one end of the shed, and the kiln at the other,
so that, even in rainy weather, the work may proceed without interruption.
A shed of the size named will be sufficient to dry as many tiles of
assorted sizes as can be burned in the clay-kiln described above.

*The Cost of Tiles.*--It would be impossible, at any time, to say what
should be the precise cost of tiles in a given locality, without knowing
the prices of labor and fuel; and in the present unsettled condition of
the currency, any estimate would necessarily be of little value. Mr.
Parker's estimated the cost of inch pipes in England at 6_s._, (about
$1.50,) per thousand, when made on the estate where they were to be used,
by a process similar to that described herein. Probably they could at no
time have been made for less than twice that cost in the United
States,--and they would now cost much more; though if the clay is dug out
in the fall, when the regularly employed farm hands are short of work, and
if the same men can cut and haul the wood during the winter, the hands
hired especially for the tile making, during the summer season, (t