Sabin, Florence Rena

Sabin was educated in Denver, Colorado, and in Vermont and graduated from Smith College in Massachusetts, in 1893. After teaching in Denver and at Smith to earn tuition money, she entered

Breasted, James Henry

After graduate studies at Yale and Berlin, Breasted began teaching Egyptology at the University of Chicago in 1894. He compiled a record of every known Egyptian hieroglyphic inscription and

Philadelphia

Philadelphia has been described either as the elegant but rather jaded great lady or as the overage and sickly spinster of American cities. A more realistic look at Philadelphia, however, shows it to be a very

Pitcher, Molly

Molly Pitcher first enters the historical record in 1778. Her original surname is unknown, though she is thought to have been Irish. Military records indicate that her first husband, William Hays, enlisted as a gunner in a Pennsylvania artillery regiment in 1777. The nickname

Hellenistic Age, Science and medicine

The three great areas of Hellenistic scholarship were medicine, astronomy, and mathematics. Alexandria attracted Herophilus (fl. 3rd century BC) from Chalcedon, who refused to stand in awe of the accepted medical dogmas and was distinguished in systematic anatomy, and the notable physiologist Erasistratus (fl. 3rd century BC) from Ceos, who realized that the heart is the

Durfort Family

The family, which can be traced back to the 11th century, claims as a member Guy Aldonce I de Durfort (1605–65), Marquis de Duras, who raised three famous sons: Jacques Henri I (1625–1704), marshal of France (1675) and Duke de Duras (1689); Guy Aldonce II (1630–1702), marshal of France (1676) and Duke de Quintin (1691); and Louis (1638–1709), who went to England and became 2nd Earl of Feversham

Photosynthesis, The pathway of electrons

The general features of a widely accepted mechanism for photoelectron transfer, in which two light reactions occur during the transfer of electrons from water to carbon dioxide, were proposed by Robert Hill and Derek Bendall, in 1960. A modified scheme for this mechanism is shown in Figure 1. In this figure the vertical scale represents the relative potential (in volts)