quite frequently and for a long period, as good crops cannot be
grown as previously, and in some instances the crop is virtually a
failure. The plants will start from seed in the early spring and grow
with sufficient vigor for a time, after which they will show signs of
wilting and finally they die. Various theories were advanced for a time
as to the cause before it was ascertained by experiment what produced
these results. Some thought they arose from lack of water in the soil,
others claimed that they were due to the presence of parasites, which in
some way preyed upon the roots, others again attributed them to improper
soil conditions. It is now just about certain that they arose from a
deficiency of soluble potash in the subsoil. Such, at least, was the
conclusion reached by Kutzleb as the result of experiments conducted
with a view to ascertain the cause of clover wilt.

The cause being known, the remedy is not difficult. It is to grow clover
less frequently on such soils. Sufficient time must be given to enable
more of the inert potash in the subsoil to become available. Another way
would be to apply potash somewhat freely to these soils, and subsoil
them where this may be necessary.

It is thought that clover sickness is as yet unknown in the United
States and Canada, although its presence had sometimes been suspected in
some sections where clover has been much grown. This does not mean that
it may not yet come to this country. Should the symptoms given above
appear on soils on which clover has been grown frequently and for a long
period, it would be the part of wisdom to take such indications as a
hint to grow clover less frequently in the rotation.

=Possible Improvement in Clovers.=--Some close observers have noticed
that there is much lack of uniformity in the plants found growing in an
ordinary field of clover, especially of the medium red and mammoth
varieties. Many of the plants vary in characteristics of stem, leaf,
flower and seed; in the size and vigor of the plants; in the rapidity
with which they grow; and in earliness or lateness in maturing. So great
are these differences that it may be said they run all the way from
almost valueless to high excellence. Here, then, is a wide-open door of
opportunity for improving clover plants through selection. This question
has not been given that attention in the past which its importance
demands.

There may be a difference in view as to all the essential feat