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 qualities of these drugs may be entirely theoretical, not to say fanciful, the Laos doctor administers them just as freely as if he had experimentally demonstrated their physiological properties. The bones, teeth, blood and gall of the tiger, bear, elephant, rhinoceros and crocodile are among the most highly-esteemed remedies; besides their specific curative properties, these medicines impart the courage of the tiger, the stability, dignity and longevity of the elephant, the solemnity and tranquillity of the crocodile, the equanimity, contentment and philosophic indifference to external things and other virtues characteristic of the rhinoceros. Likewise, they eat the bones of the raven to protect them from evil spirits, and perhaps also to enable them to eat with impunity and relish of any dish; it is to be feared that certain purloining instincts of this bird have been communicated in this way!

Patient observation and intelligent experimental investigation are entirely unknown to the Laos medicine-man; it is doubtful if he has, either by intelligent experiment or by accident, arrived at one solitary verifiable fact either in physiology or therapeutics; satisfied with his supposed stock of knowledge, he has no desire to increase it.

When called to see a patient the Laos doctor states authoritatively what the ailment is; then proceeds to prepare a dose of medicine, which