
          215

3.  This is that the disease did not arise from anything
inherent in the trees, but from some cause external and
disconnected from them, the trees coming from England where
the yellows is unknown.  "Mr. Downing states (Fruits and
Fruit Trees of America, p. 467.) a further fact that 'notwithstanding
the great number of American varieties of peach trees
that have been repeatedly sent to England, and are now growing
there, the disease has never extended itself there, or been
communicated to other trees.'  Peach trees in England, therefore,
have no constitutional taint that makes them liable to
the 'yellows', and if they remain there they never take the
disease.  But bring these trees to New Haven, and in fifteen
months after their arrival they are dying with the  yellows.
There must be therefore something here which is not there.
The disease shows itself too soon after reaching this country
to admit of the supposition, that the exhausting processes,
said to be peculiar to our climate and practices have an
agency in producing it.  Must we not suppose the disease to
be connected somehow with the place rather than condition?
It matters not where our trees or seeds come from--Liverpool,
Flushing, Newburg, Western New York or Ohio,--if planted out
        