Of this cast are those notable observations, that money is not health; riches cannot purchase every thing: the metaphor which makes gold to be mere muck, with the morality which traces fine clothing to the sheep's back, and denounces pearl as the unhandsome excretion of an oyster.

Germs which multiply in such persons are found in their urine and excretions from the bowels; in discharges from ulcers and abscesses; in the spit or particles coughed or sneezed into the air; in the perspiration or scales from the skin; and in the blood sucked up by biting insects.