state.
However, these products can be obtained through reputable dealers who
will willingly guarantee the contents. In case of doubt, the purchaser
may secure an analysis by his state experiment station at a moderate
cost.

The law requires that there shall be affixed to every package of
fertilizer offered for sale a statement about as follows:

The minimum per centum of each of the following constituents
which may be contained therein:

(a) Nitrogen.

(b) Soluble, available and total phosphoric acid, except in
cases of undissolved bone, basic slag phosphate, wood ashes,
unheated phosphate rock, garbage tankage and pulverized natural
manures, when the minimum per centum of total phosphoric acid
may be substituted. This latter applies only in those states
where raw materials are subject to inspection.

(c) Potash soluble in distilled water.

It is possible to comply with the law and yet state the guarantee upon
each bag of fertilizer in such a manner as to mislead the uninformed.
It is not the purpose of this book to deal with such technical
details, but if the purchaser of commercial fertilizers is not already
well acquainted with fertilizer terms, he should secure an elementary
textbook on the subject or write to his state experiment station for a
bulletin discussing them.

FEEDING STUFF CONTROL

The law controlling the sale of stock foods is of more recent origin
than the fertilizer control act and has not been so universally
adopted up to the present time. The necessity for such a law arises
from the growing use as stock foods of various by-products in the
manufacture of liquors, starch, glucose, sugar, cottonseed and linseed
oils and breakfast foods. Various mixtures, varying widely in chemical
composition, especially in protein and crude fiber, were placed upon
the market. In some instances mixtures were grossly adulterated with
such things as oat hulls and ground corn cobs.

The adoption of this law by certain states has served to make other
states the dumping ground for inferior stock foods, thus increasing
the necessity for similar protection. The law does not apply to the
ordinary grains produced by farmers or to the usual by-products of
millers.

SEED CONTROL

From time immemorial it has been the universal custom of seedsmen to
disclaim all responsibility for the purity and germinating power of
their seeds. But as the impor