In America the eighth year-book of the National Society for the

Scientific Study of Education treats of this important subject with
great ability, massing the agencies and methods in impressive array
In America the eighth year-book of the National Society for the
Scientific Study of Education treats of this important subject with
great ability, massing the agencies and methods in impressive array.
Many other educational journals and organized societies could be cited
as expressing a new conscience in regard to this world-old evil. The
expert educational opinion which they represent is practically agreed
that for older children the instruction should not be confined to
biology and hygiene, but may come quite naturally in history and
literature, which record and portray the havoc wrought by the sexual
instinct when uncontrolled, and also show that, when directed and
spiritualized, it has become an inspiration to the loftiest devotions
and sacrifices. The youth thus taught sees this primal instinct not only
as an essential to the continuance of the race, but also, when it is
transmuted to the highest ends, as a fundamental factor in social
progress. The entire subject is broadened out in his mind as he learns
that his own struggle is a common experience. He is able to make his own
interpretations and to combat the crude inferences of his patronizing
companions. After all, no young person will be able to control his
impulses and to save himself from the grosser temptations, unless he has
been put under the sway of nobler influences. Perhaps we have yet to
learn that the inhibitions of character as well as its reinforcements
come most readily through idealistic motives.


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DEVELOPMENT OF NERVE FIBERS

DEVELOPMENT OF NERVE FIBERS.--The nerve _fibers_, no less than the
cells, must go through a process of development. It has already been
shown that the fibers are the result of a branching of cells. At birth
many of the cells have not yet thrown out branches, and hence the fibers
are lacking; while many of those which are already grown out are not
sufficiently developed to transmit impulses accurately. Thus it has been
found that most children at birth are able to support the weight of the
body for several seconds by clasping the fingers around a small rod, but
it takes about a year for the child to become able to stand. It is
evident that it requires more actual strength to cling to a rod than to
stand; hence the conclusion is that the difference is in the earlier
development of the nerve centers which have to do with clasping than of
those concerned in standing. Likewise the child"s first attempts to feed
himself or do any one of the thousand little things about which he is so
awkward, are partial failures not so much because he has not had
practice as because his nervous machinery connected with those movements
is not yet developed sufficiently to enable him to be accurate. His
brain is in a condition which Flechsig calls 'unripe.' How, then, shall
the undeveloped cells and system ripen? How shall the undeveloped cells
and fibers grow to full maturity and efficiency?


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"As to the rest, the action which excites and gives motion to

the electric fluid does not exert itself, as has been
erroneously thought, at the contact of the wet substance with
the metal, where it exerts so very small an action, that it may
be disregarded in comparison with that which takes place, as
all my experiments prove, at the place of contact of different
metals with each other
"As to the rest, the action which excites and gives motion to
the electric fluid does not exert itself, as has been
erroneously thought, at the contact of the wet substance with
the metal, where it exerts so very small an action, that it may
be disregarded in comparison with that which takes place, as
all my experiments prove, at the place of contact of different
metals with each other. Consequently the true element of my
electromotive apparatus, of the pile, of cups, and others that
may be constructed according to the same principles, is the
simple metallic couple, or pair, composed of two different
metals, and not a moist substance applied to a metallic one, or
inclosed between two different metals, as most philosophers
have pretended. The humid strata employed in these complicated
apparatus are applied therefore for no other purpose than to
effect a mutual communication between all the metallic pairs,
each to each, ranged in such a manner as to impel the electric
fluid in one direction, or in order to make them communicate,
so that there may be no action in a direction contrary to the
others."


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The problem of species has profoundly changed since 1859

The problem of species has profoundly changed since 1859. For
Darwin it was perforce a problem of adaptation. For the
investigator of to-day it has become a part of the more
inclusive problem of variation. Along with the logical results
of natural selection he contemplates the biological processes
of organic differentiation. He is no longer satisfied to assume
the existence of those modifications that make selection
possible. In his efforts to control them, the conception of
adaptation as a result has been crowded from the center of his
interest by the conception of adaptation as a process.


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As far as I am aware the first scientific investigation of this

subject was made by the writer
As far as I am aware the first scientific investigation of this
subject was made by the writer. At a meeting of the American
Association for the Advancement of Science held at Indianapolis
in 1890, some studies and experiments were reported in a short
paper entitled 'Notes upon the Crystals in certain species of
the Arum Family.'


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