red, it is attacked in wet weather by the oxygen of the air, a
portion of its carbon is burned off, some of its starch is converted
into sugar, and in extreme cases it germinates and becomes _malty_.
But not only is the seed liable to injury from the elements; it is also
exposed to the ravages of the feathered tribe, and no matter how well
a field of corn may be watched, or how great the number of _scarecrows_
erected in it, there is always a certain diurnal loss, occasioned by the
ravages of birds.
It is not only necessary that ripe corn should be cut as soon as
possible, but it is sometimes desirable to reap it before it becomes
fully matured. When the grain is intended for consumption as food, the
less bran it contains the better. Now the bran, as is well known, forms
the integument, or covering of the vital constituents of the seed; and
it is the last part of the organ to be perfected. The growth of the
seed for several days before its perfect development, is confined to
the _testa_ or covering. Now as this is the least valuable part of the
article, its increase is matter of but little moment; and when it is
excessive it renders the grain less valuable in the eyes of the miller.
That the cutting of the grain before it is perfectly ripe is attended
with a good result, is clearly proved by the results of an experiment
recorded in Johnston's "Agricultural Chemistry." A crop of wheat was
selected; one-third was cut twenty days before it was ripe; another
third ten days afterwards; and the remaining portion when its grain had
been fully matured. The relative produce in grain of the three portions
taken, as stated above, was as 1, 1.325, and 1.260. The following table
exhibits the relative proportions of their constituents:--
In 100 parts of the grain cut at
20 days. 10 days. Dead ripe.
Flour 74.7 79.1 72.2
Sharps 7.2 5.5 11.0
Bran 17.5 13.2 16.0
---- ---- ----
99.4 97.8 99.2
The flour contained gluten 9.3 9.9 9.6
The results of this experiment, and of the general experience of
intelligent growers, show that grain cut a week or ten days before it is
perfectly ripe contains more flour, a
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