tube containing
it."--Wood's _Materia Medica_.

"Tobacco appears to chiefly affect the heart and brain, and I have
therefore placed it among cerebral and cardiac poisons."--Taylor's
_Treatise on Poisons_.

[10] "Certain events occur in the brain; these give rise to other events,
to changes which travel along certain bundles of fibers called nerves, and
so reach certain muscles. Arrived at the muscles, these changes in the
nerves, which physiologists call nervous impulses, induce changes in the
muscles, by virtue of which these shorten contract, bring their ends
together, and so, working upon bony levers, bend the arm or hand, or lift
the weight."--Professor Michael Foster.

[11] The synovial membranes are almost identical in structure with serous
membranes (page 176), but the secretion is thicker and more like the
white of egg.

[12] "Smoking among students or men training for contests is a mistake. It
not only affects the wind, but relaxes the nerves in a way to make them
less vigorous for the coming contest. It shows its results at once, and
when the athlete is trying to do his best to win he will do well to avoid
it." Joseph Hamblen Sears, Harvard Coach, and Ex-Captain of the Harvard
Football Team, Article in _In Sickness and in Health_.

[13] "There is no profession, there is no calling or occupation in which
men can be engaged, there is no position in life, no state in which a man
can be placed, in which a fairly developed frame will not be valuable to
him; there are many of these, even the most purely and highly
intellectual, in which it is essential to success--essential simply as a
means, material, but none the less imperative, to enable the mind to do
its work. Year by year, almost day by day, we see men (and women) falter
and fail in the midst of their labors; ... and all for want of a little
bodily stamina--a little bodily power and bodily capacity for the
endurance of fatigue, or protracted unrest, or anxiety, or
grief."--Maclaren's _Physical Education_.

[14] "One half the struggle of physical training has been won when a boy
can be induced to take a genuine interest in his bodily condition,--to
want to remedy its defects, and to pride himself on the purity of his
skin, the firmness of his muscles, and the uprightness of his figure.
Whether the young man chooses afterwards to use the gymnasium, to run, to
row, to play ball, or to saw wood, for the purpose of improving his
physical condition, matters