or twenty barrels per hour,
and four hundred and eighty barrels per day.

I have seen the same drain discharge at least four times that
quantity, at some times! The peep-holes give opportunity for
inspection, and I find the result to be, that the water-table is
kept down four feet below the surface at all times, except for a
day or two after severe rain-storms.

There is an apparent want of system in this plan, partly to be
attributed to my desire to conform somewhat to the line of the
fences, and partly to the conformation of the land, which is quite
uneven. At several points near the ravine, springs broke out,
apparently from deep fountains, and short drains were run into
them, to keep them below the surface.

The general result has been, to convert wet land into early warm
soil, fit for a garden, to render my place more dry and healthful,
and to illustrate for the good of the community the entire
efficiency of tile-drainage. The cost of this work throughout, I
estimate at fifty cents per rod, reckoning labor at $1 per day, and
tiles at $12 per thousand, and all the work by hand-tools. I think
in a few years, we may do the same work at one-half this cost.
Further views on this point are given in the chapter on the "Cost
of Drainage."

After our work was in press, we received from Mr. William Boyle, Farmer
at the Albert Model Farm in Ireland, the paper which is given below,
kindly sent in reply to a series of questions proposed by the author.
The Albert Model Farm is one of the Government institutions for the
promotion of agriculture, by the education of young men in the science
and the practice of farming; and from what was apparent, by a single
day's examination of the establishment in our visit to it in August,
1857, we are satisfied of its entire success. The crops then growing
were equal, if not superior, to any we have seen in any country. Much of
the land covered by those crops is drained land; and having confidence
that the true principles of drainage for that country must be taught and
practiced at this institution, we thought it might be instructive, as
well as interesting to the farmers of America, to give them the means of
comparison between the system there approved, and those others which we
have described.

Had the paper been sooner received, we should have referred to it
earlier in our book; y