Atlanta semi-weekly journal. (Atlanta, Ga.) 1898-1920, 1902-12-18

ID go downward through the SOIL ana away
from It by means OF artificial channels
within the soil.
Tile Drainage.
The very best method OF underdrainage
ever yet devised Is tile drainage, which
consists In laying circular clay pipes, one
foot long. I'm continuous lines through the
soil 50 that any water which finds its
way into the tiles will be carried by gray
ity to some lower point, thus conveying
the surplus away from the soil. The sur
plus water will enter the line OF tiles
at the openings left between the ends, or
joints, as they are called. This kind OF
drain being surrounded by the soil, the
spaces OF which being filled with water
the water will flow by gravity through
the crevices between the joints OF the
tiles and passes OF through the tiles.
Now as to the question of how close to-
gether should these drainage tiles be
placed. II depends largely upon the gen
eral structure OF the soil II the land is
open and porous the thing should be from
Is to % feet apart. II the soil is more
compact then the tiles should be
% 10 100 feet apart. AS a general rule the
proper depth for placing the thing below
the surface OF the soil is three feet The
size OF the filing should not be less than
three inches in diameter for any kind OF
lateral drains When the lines are placed
from Is TO 100 feet apart the thing should
not be less than four inches in diameter.
The average grade or fall to be observed
is usually ] per cent or one foot fall TO
each 100 feet length Of thing or drainage
pipes. The question as to whether under
drainage viii pay, depends largely upon
the location Of the land and the natural
outlet. grades, etc. The cost Of under
drainage with thing. per acre. will amount
10 about sl4, where the tiles are laid 100
feet apart. II placed only IS feet apart the
cost viii reach SO per acre. Very often
this cost will be returned in one year by
the profits from the land reclaimed and
cultivated in marketable crops. Thing
for under drainage can be purchased from
any pottery. such as Stevens Bros, To-
Gated at Stevens Pottery, Ga.
Now as to sub-ffrigation Of land referred
to BY our correspondent. II the sub-wa-
terways are to be constructed of plank
they should be made OF sufficient size and
located near enough together 20 carry of
the water whenever It is desired to drain
the field. OF course this viii depend in
great measure upon the volume Of water
to be handled. Ordinarily troughs made Of
six-incn lumber anG placed 80 feet apart,
and three feet under ground, with the
seams OF the top plank sprung lightly
apart Will De sufficient TO do the work re-
quired. Stand pipes reduced TO the level
OF the surface and let into the troughs
with caps. to close or open as the case
may be. would be necessary. When it was
desired 70 let of the water these caps
could be opened and the water discharged.
II 1t was desired to under DRAIN then the
use of the one-foot thing. three inches
I'm diameter. placed 80 to 80 feet apart
would be the best plan. Under drainage
Of swampy and rlcn marsh lands is be-
coming quite common in some sections of
the country. and in no instance when
the work was properly done has the own
er Of the land been disappointed.
HARVIE JORDAN.