Harmless bacteria so numerous in drinking water that a person often takes a half-million into his stomach daily.

Bacteria

Harmless bacteria so numerous in drinking water that a person often takes a half-million into his stomach…

Useful bacteria which change dead matter into food for the grass, wheat, and corn.

Bacteria

Useful bacteria which change dead matter into food for the grass, wheat, and corn.

The germs causing boils

Boils

The germs causing boils

The germs causing diptheria.

Diptheria

The germs causing diptheria.

The germs causing leprosy.

Leprosy

The germs causing leprosy.

The germs causing lockjaw.

Lockjaw

The germs causing lockjaw.

The germs causing malaria.

Malaria

The germs causing malaria.

The germs causing pneumonia.

Pneumonia

The germs causing pneumonia.

The germs causing sore throat.

Sore Throat

The germs causing sore throat.

The germs causing tuberculosis.

Tuberculosis

The germs causing tuberculosis.

The germs causing typhoid.

Typhoid

The germs causing typhoid.