89

2,000 lbs. of raw bones, and $50 for 2,240 lbs. of Peruvian
Guano, I come to the following result:

If 2,000 lbs. of raw Bones, containing 23.61 per cent, of Phos-
phoric Acid, are worth $25, then 1 lb. of Phosphoric Acid is
worth 5.3 cents.

Peruvian Guano, containing 14 per cent, of Phosphoric Acid and
16 per cent, of Ammonia, is therefore worth—

For its Phosphoric Acid.................................. $16 62

And for its Ammonia....................................... 33 38

Total..................................................... $50 00

And therefore 1 lb. of Ammonia is worth $9.31 cents.*
The above Super-Phosphate of Lime contains in 2000 lbs., as
per Dr. Stewart's analysis,

373 lbs. of Phosphoric Acid, which at 5 3 cents are worth......$19 76

And 90 lbs. of Ammonia, at 9.31 cts.................................. 8 38

Total value.......................................................... 28 14

This is the real money value of the article as calculated from
Dr. S's analysis, and if we estimate Peruvian Guano at fifty dol-
lars the short ton, (its present price) then at most the article is
not worth more than thirty-one or thirty-two dollars per ton, a
price very far below that at which it is sold. You can buy the
materials of this manure and apply them to your soil at a far less
sum than the price for which this manure is sold here.

Thirty pounds of Peruvian Guano and seventy of Bones or of
good quality Mexican Guano would make one hundred pounds of
manure superior to "C. B. DeBurg's Super-Phosphate;" and
you can distribute these over an acre much better by sowing them
separately, than if they are mixed before being used. When
you can purchase the elements of this manure then for about thir-
ty-one or thirty-two dollars, and have a more thorough mixture by-
sowing them separately on your fields, why buy this or any
other similar artificial manure ? The valuation put on this manure
by Dr. Stewart is entirely too high and is not warranted by the
analysis made by him.

It has become quite the rage now to advertise these artificial
manures as superior to best Peruvian Guano, and from many
gentlemen of high integrity and skill in practical agriculture, cer-
tificates to the fact have been obtained.

The profits of the dealer in Peruvian Guano, if he sells a gen-
uine article, are very small, but if he sells an artificial manure
made of very cheap substances, then his profits are very great;
they are just in proportion to the worthlessness of the materials

* This was at the price of Peruvian Guano when this article was written.