. The sieves are also different, and the work is less rapidly
done than if done by the former. During recent years, however, the seed
is successfully threshed with an ordinary grain threshing machine, and
the work of threshing is thus more expeditiously done. Certain
attachments are necessary, but it is claimed that not more than an hour
is necessary to put these in place, or to prepare the machine again for
threshing grain.

Since the seed is not deemed sufficiently clean for market as it comes
from the machine, it should be carefully winnowed by running it through
a fanning mill with the requisite equipment of sieves. It is important
that this work should be carefully done if the seed is to grade as No. 1
in the market. If it does not, the price will be discounted in
proportion as it falls below the standard. A certain proportion of the
seed thus separated will be small and light. This, if sold at all, must
be sold at a discount. If mixed with weed seeds it should be ground and
fed to some kind of stock.

The haulm, when the seed crop has been well saved, has some feeding
value, especially for cattle. If not well saved it is only fit for
litter, but even when thus used its fertilizing value is about
two-thirds that of clover hay. More or less seed remains in the chaff,
and because of this the latter is sometimes drawn and strewn over
pastures, or in certain by places where clover plants are wanted. Seed
sown in the chaff has much power to grow, owing, it is thought, to the
ability of the hull enclosing the seed to hold moisture. The yields in
the seed crops of medium red clover vary all the way from 1 to 8 bushels
per acre. The average yields under certain conditions are from 3 to 4
bushels per acre. Under conditions less favorable, from 2 to 3 bushels.

Within the past two decades the seed crop has been seriously injured by
an insect commonly spoken of as the clover midge (_Cecidomyia
leguminicola_) which preys upon the heads so that they fail to produce.
A field thus affected will not come properly into bloom. The remedy
consists in so grazing or cutting the clover that the bloom will come at
that season of the summer when the insects do not work upon the heads.
This season can only be determined by actual test. In Northern areas it
can usually be accomplished by pushing the period of bloom usual for the
second crop two to four weeks forward.

=Renewing.=--When clover is grown for hay, it is not usual to try to