in this connection in its technical
signification of a histological unit of the body (sec. 12), but merely in
its primary sense of a small cavity

[36] "The student must guard himself against the idea that arterial blood
contains no carbonic acid, and venous blood no oxygen. In passing through
the lungs venous blood loses only a part of its carbonic acid; and
arterial blood, in passing through the tissues, loses only a part of its
oxygen. In blood, however venous, there is in health always some oxygen;
and in even the brightest arterial blood there is actually more carbonic
acid than oxygen."--T. H. Huxley.

[37] "Consumption is a disease which can be taken from others, and is not
simply caused by colds. A cold may make it easier to take the disease. It
is usually caused by germs which enter the body with the air breathed. The
matter which consumptives cough or spit up contains these germs in great
numbers--frequently millions are discharged in a single day. This matter
spit upon the floor, wall, or elsewhere is apt to dry, become pulverized,
and float in the air as dust. The dust contains the germs, and thus they
enter the body with the air breathed. The breath of a consumptive does not
contain the germs and will not produce the disease. A well person catches
the disease from a consumptive only by in some way taking in the matter
coughed up by the consumptive."--Extract from a circular issued by the
Board of Health of New York City.

[38] "The lungs from the congested state of their vessels produced by
alcohol are more subject to the influence of cold, the result being
frequent attacks of bronchitis. It has been recognized of late years that
there is a peculiar form of consumption of the lungs which is very rapidly
fatal and found only in alcohol drinkers."--Professor H. Newell Martin.

[39] "The relation to Bright's Disease is not so clearly made out as is
assumed by some writers, though I must confess to myself sharing the
popular belief that alcohol is one among its most important
factors."--Robert T. Edes, M.D.

[40] Thus the fibers which pass out from the sacral plexus in the loins,
and extend by means of the great sciatic nerve and its branches to the
ends of the toes, may be more than a yard long.

[41] Remarkable instances are cited to illustrate the imperative demand
for sleep. Gunner boys have been known to fall asleep during the height of
a naval battle, owing to the fatigue occasioned by the arduous l