e cases referred to, the manure is
most costly, and yet we find hardly any case where there is not an
addition to the crop, of say two to three tons of turnips per acre, by
such an increase of manure as the guano. Now, if a ton of turnips be
worth 10s., or even 9s, there is at once an element of repayment; for,
if a soil be in a condition to give a large crop of turnips, it is
almost certain to be capable of giving a large crop of any other plant
to succeed.

Mr. Charnock gives it as the result of his practical experience, that 4
cwt. of Peruvian guano, without manure, is the cheapest and best mode of
growing turnips; but the general testimony seems to be decidedly in
favor of what all farmers find it the best and easiest to do, viz., to
add a small quantity of artificial manure to that which the farm will
supply, and so to spread the whole over the land, rather than put all
the dung in one place, and all the artificial manure in another.

No one can doubt the true statement of this report, which proves $7 50.
worth of guano equal to 20 tons of manure--reducing the worth of that
to one shilling and sixpence--about 34 cents--per ton, or one dollar a
cord. Now, as manure is often estimated in this country by the cord, and
valued at about $4, and applied at the rate of 6 cords per acre, it
follows that a saving of $14 50 per acre may be made by using 250 lbs.
of guano instead of purchasing the manure. This Yorkshire experiment
exactly corresponds with those made in this country, some of which we
have detailed, and which proves that a farmer cannot buy manure at the
common selling prices; and if he hauls his own the distance of a mile,
he will expend more value of time, than it is worth to him on the land;
because the same value of time--"time is money"--expended for guano,
will bring him better returns. In this, as before stated, we are
confirmed by Professor Mapes; and here is the opinion of Mr. Hovey of
Boston, the eminent horticulturist, which we find in the August No. of
his magazine, as follows--

"If, after such evidence as this, farmers will continue to buy ashes at
eight cents a bushel, or manure at three to six dollars a cord,
including carting, and use them alone, then let them do so, but they
should not complain that their crop cost more than it comes to. To
orchardists and fruit growers, this information is of the greatest
value, and we trust they will not let it pass unheeded."

This opinion is valuable be