Sacramento daily record-union. [volume] (Sacramento [Calif.]) 1875-1891, 1881-05-21

IN them. Here, along the inner bark, 1t
lodges. and remains in thick, sticky state
ali winter. If it happens to How down til! 1t
meets with any distraction ana remains
in any considerable quantity. It freezes
aaain beneath the bark, and some OF
the wood beneath it sfriyeis ana DIES. In
the ensuing spring the upward sap nses
through its ordinary chsnnei- Inc Ut T Woou
or aiburnum; the leaves expand. and Tor
some time nearly all the upward current be-
inc taken up to form leaves and new Shoots
the tree appears furnishing, Towards the
bepinninp Of summer, however, the leaves De-
DIN to send the downward current OF sap 70
Increase the woody matter of the stem. Inns
current. it will be relnem 3ered, has TO pass
down throu1 b the inner bark, or hoer, along
which still! remain portions OF the poisoned
SAP arrested in its course the previous antumD.
The poison is diluted and taken up by tie
naw downward current distributed towards
the nth and along the new layer OF alburnum,
thus tainting ali the neighboring parts
Should any of the adj scentsap vess ishave been
ruptured by frost 50 that the poison thus be-
comes mixed with the still ascending current
of sap the branch above it Immediately turns
black and dies precisely as if poison were in
tr 1duced under the bark, and very frequently
it is accompanied with precisely the order of
decaying frost-bitten vegetation" The
ABOVE We'll anu lutly -uetCIlpcu Operations Oh
the sap of trees Is OF itself an interesting and
instructive study, and whether the disease
that has made its appearance in limited
degree among the pear trees in this State is
the same as that of the Atlantic States or
not, the above description will enable our
people to think more clearly and understand
inglY on the subjecs and assist them i'll finding
the real cause of the newly appearing disease.
While we have no severe freezing weather as
they do in the n ,rthern aed Western States
across the mountains, still our growing season
often continues up to the very occurrence of
frost. This was the case last fall aud winter,
and, as is well known to viticulturists, caused
the killing of the growing canes of many
kinds of vines, Just as it does in colder
climates. l. is true that the symptoms of
the California-discovered disease as observed
do not fully correspond to those of the East
ern blight, yet we thiak that more close
observation may lead TO great similarity, or
| parallel, in this respect If lG be disease
arising from similar cause We need not fear
that it will become very general or danger
Gus, from the fact that cold, freezing weather,
while the sap is flowing freely, is one OF the
necessary conditions of its existence, and we
very seldom have fulfillment of this condl.
ton in this State. Whatever may be the
fact as to the relations of the two diseases, 1t
must be remembered that any pear tree dis
ease that threatens to become general, or to
affect ia a dangerous manner the culture OF
pears in this State, is a serious matter, and
should be looked after and mastered as soon
as possible. Our pear interest is one of the
most important fruit Interests we have, and
we cannot afford to neglect it when even re-
mote danger threatens it.