The average number of red blood-corpuscles per cubic millimeter is
about 5,000,000 for men, and somewhat less for women. The number is
much increased in people who live in altitudes of about 8000 feet or
more. The greatest decrease occurs in anemia, when they may number
less than 1,000,000, and in leukemia, when there may be not more than
2,000,000.
The average number of white blood-corpuscles per cubic millimeter
varies from 5000 to 10,000. The number is usually decreased in anemia,
and much increased in leukemia, when they may number 500,000 per cubic
millimeter.
Blood should contain 100 per cent. hemoglobin. Hospital patients seldom
have this amount. Patients are not considered safe for operation who
have less than 50 per cent., and can not live long if they have 10 per
cent. or less.
[Illustration: The skeleton.]
[Illustration: The principal arteries and veins of the body (Morrow).]
[Illustration: Abdominal regions.]
[Illustration: General scheme of the digestive tract, with the chief
glands opening into it (Raymond).]
[Illustration: Position of the thoracic and abdominal organs, front
view (Morrow)]
[Illustration: Position of the thoracic and abdominal organs, rear view
(Morrow).]
[Illustration: _A_, Recurrent bandage of the head; _B_, anterior
figure-of-eight bandage of the chest.]
[Illustration: Ascending spica bandage of groin.]
[Illustration: Bandage of the knee.]
[Illustration: Finger bandage.]
[Illustration: Double spica of groin.]
[Illustration: Ascending spica of shoulder.]
[Illustration: Figure-of-eight bandage of forearm.]
[Illustration: Spica bandage of thumb.]
[Illustration: Spica bandage of ankle.]