e career should bid farewell either to his
honorable ambition or to his tobacco, for the two very rarely travel
together. Consequently our military and naval academies and very many
seminaries and colleges prohibit the use of tobacco by their students. For
the same reasons the laws of many states very properly forbid the sale to
boys of tobacco, and especially of cigarettes.

307. Effect of Tobacco upon Character. Nor does tobacco spare the
morals. The tobacco-user is apt to manifest a selfish disregard of the
courtesies due to others. He brings to the presence of others a repulsive
breath, and clothing tainted with offensive odors. He poisons the
atmosphere that others must inhale, and disputes their rights to breathe a
pure, untainted air. The free use of tobacco by young people dulls the
acuteness of the moral senses, often leads to prevarication and deceit in
the indulgence, and is apt to draw one downward to bad associates. It is
not the speed but the direction that tells on the future character and
destiny of young men.

Additional Experiments.

Experiment 132. _To illustrate the cooperation of certain parts of
the body._ Tickle the inside of the nose with a feather. This does not
interfere with the muscles of breathing, but they come to the help of
the irritated part, and provoke sneezing to clear and protect the nose.

Experiment 133. Pretend to aim a blow at a person's eye. Even if he
is warned beforehand, the lids will close in spite of his effort to
prevent them.

Experiment 134. _To illustrate how sensations are referred to the
ends of the nerves_. Strike the elbow end of the ulna against anything
hard (commonly called "hitting the crazy bone") where the ulna nerve is
exposed, and the little finger and the ring finger will tingle and
become numb.

Experiment 135. _To show that every nerve is independent of any
other._ Press two fingers closely together. Let the point of the finest
needle be carried ever so lightly across from one finger to another, and
we can easily tell just when the needle leaves one finger and touches
the other.

Experiment 136. _To paralyze a nerve temporarily_. Throw one arm
over the sharp edge of a chair-back, bringing the inner edge of the
biceps directly over the edge of the chair. Press deep and hard for a
few minutes. The deep pressure on the nerve of the arm will put the arm
"asleep," causing numbness and tingling. The leg