They will be fruitful of grand
results in proportion as we persistently and combinedly pursue the yet
unsolved problems and are not tempted to the immediate presentation of
separate facts, which are so innumerable and so easily observed that
their very wealth becomes an element of weakness. Epoch-making
discoveries result only from this power of following up unswervingly
any given problem, or any fixed ideal. The kerosene emulsion, the
Cyclone nozzle, the history of _Phylloxera vastatrix_, of _Phorodon
humuli_, of _Vedalia cardinalis_, are illustrations in point, and
while we may not expect frequent results as striking or of as wide
application as these, there is no end of important problems yet to be
solved and from the solution of which we may look for similar
beneficial results. Applied entomology is often considered a sordid
pursuit, but it only becomes so when the object is sordid. When
pursued with unselfish enthusiasm born of the love of investigation
and the delight in benefiting our fellow men, it is inspiring, and
there are few pursuits more deservedly so, considering the vast losses
to our farmers from insect injury and the pressing need that the
distressed husbandman has for every aid that can be given him.
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