tance of good seed--good in hereditary
power, good in germination, good in its freedom from adulteration, good
in its absence of noxious weed seed--has become better understood demand
for some method of control has arisen. In at least one state there is a
seed-control law modeled quite closely after the fertilizer-control law.
However, the usual method of protection consists in purchasing by sample
or the insistence of a guarantee, with a subsequent "analysis" of a
sample of the purchased seed.

The germinating power and purity of seed can be determined cheaply by
an expert within from five to twenty days, depending upon the species.
The federal government has a division of seed control in its
Department of Agriculture at Washington, D. C. Any person may send a
sample of seed to this division and have its purity and germinating
power determined, and in some of the states the experiment station
will perform similar services without charge. Clover, alfalfa, grass
and other small seeds should always be purchased subject to such
inspection, unless the purchaser is prepared to make his own
inspection, which a very little training makes possible.

NURSERY INSPECTION

There is no national law concerning the importation of insect-infested
or diseased plant stock.

Several of the states have passed both state and interstate regulations
concerning the sale of nursery stock. The insects usually legislated
against are San Jose scale, gypsy moth and brown-tail moth, while the
diseases usually interdicted are yellows, black knot, peach rosette,
and pear blight.

The enforcement of the law is usually placed in charge of a person
having special knowledge of economic insects and fungous diseases. In
addition to these police regulations this officer may, by various
means, attempt to bring into practice methods calculated to eradicate
or, at least, lessen the severity of existing attacks.

Commerce in vinegar, dried fruits, insecticides and fungicides is also
regulated in some states.

DAIRY, FOOD AND DRUG INSPECTION

An adequate discussion of the rise and development of the control in
the sale of dairy and food products would require a chapter by itself,
if not an entire volume. Suffice it to say here that the laws on this
general subject have acquired an importance in many ways quite beyond
that of any of the other control measures discussed in this chapter.
In the extent of funds ha