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In 1864, the first barbiturate (barbituric acid) was synthesized.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Wave Properties Wave Properties
In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism
(a) In a healthy eye, aqueous humor is formed in the ciliary process and drains through the canal of ... (a) In a healthy eye, aqueous humor is formed in the ciliary process and drains through the canal of ...
Exterior View of Tholos, The So-called Treasury of Atreus Exterior View of Tholos, The So-called Treasury of Atreus
How are Muscles Formed? How are Muscles Formed?
The nucleus is bounded by a double membrane called the nuclear envelope The nucleus is bounded by a double membrane called the nuclear envelope
Video: Osteoporosis

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