Every farmer should have samples in his study or elsewhere of the common commercial grades of wheat, oats, and other grains, and specimens of the seeds of the leading grasses and the most frequent weeds.

He can secure the weed seeds from the plants themselves ; or in some cases the Experiment Station will aid him to secure them. Whenever a pernicious weed appears on the plantation, seeds should be saved of it. The farmer should determine how it was introduced, whether with grain or with grass seed ; he will then be on the guard for future invasion. He should have a good hand lens with which to examine all grass seed and clover seed that he purchases.

He should have samples of pure grass seed, the different kinds of clover, alfalfa, and similar crops.

Samples of the different grades of wheat and other grains, of the leading varieties, and of shrunken or injured grains, would be very useful to persons who are engaged in the growing of grain or in the handling of it. They will serve as standards. In some of the states, the experiment stations supply such seeds ; if they do not supply them, they can put the farmer in touch with the ways of securing them.

All seeds should be placed in tight bottles and be thoroughly dried before being put away. In bottles they are easy of examination, and they are also free from weevils and other insects. If they should become affected with insects, the pests may be destroyed by pouring a little bisulfid of carbon into the bottle and quickly corking it up tight.

For samples of corn, buckwheat, rye, rice, and other commercial grains, it is well to use one of the small fruit-jars. The weed seeds may be put up in vials with wide necks.