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Fleming, Sir Alexander

(Encyclopedia)Fleming, Sir Alexander, 1881–1955, Scottish bacteriologist, discoverer of penicillin (1928) and lysozyme (1922), an antibacterial substance found in saliva and other body secretions. Educated at St....

laetrile

(Encyclopedia)laetrile lāˈətrĭlˌ [key], name given to the chemical amygdalin, a substance derived from an extract of the kernels of many fruits, notably apricots, bitter almonds, and peaches. The idea that lae...

Richter, Hans

(Encyclopedia)Richter, Hans rĭkhˈtər [key], 1888–1976, American artist, b. Germany. A painter and filmmaker, Richter was influenced by cubism and Dada and was a member of the Dutch de Stijl group (see Stijl, ...

Davos

(Encyclopedia)Davos dävôsˈ [key], town, Grisons canton, E Switzerland, on the Landwasser River. A famous...

Roux, Wilhelm

(Encyclopedia)Roux, Wilhelm ro͞o [key], 1850–1924, German anatomist, a founder of experimental embryology. He was a pupil of Ernst Haeckel and a professor (1895–1921) at the Univ. of Halle. In his studies of ...

Guggenheim, Peggy

(Encyclopedia)Guggenheim, Peggy (Marguerite Guggenheim), 1898–1979, American modern art patron and collector, b. New York City. The daughter of Benjamin, niece of Solomon, and grand-daughter of Meyer Guggenheim, ...

Escher, M. C.

(Encyclopedia)Escher, M. C. (Maurits Cornelis Escher) ĕsˈkhər [key], 1898–1972, Dutch artist. Primarily a graphic artist, Escher composed works notable for their irony, often with impossible perspectives rende...

Wilkinson, Sir Geoffrey

(Encyclopedia)Wilkinson, Sir Geoffrey, 1921–, English inorganic chemist. He shared the 1973 Nobel Prize in Chemistry with Ernst Otto Fischer for their independent research on the organometallic compounds of the t...

biogenetic law

(Encyclopedia)biogenetic law, in biology, a law stating that the earlier stages of embryos of species advanced in the evolutionary process, such as humans, resemble the embryos of ancestral species, such as fish. T...

Bernstorff, Andreas Peter

(Encyclopedia)Bernstorff, Andreas Peter ändrāˈäs pāˈtər bĕrnsˈtôrf [key], 1735–97, Danish politician; nephew of Johann Hartwig Ernst Bernstorff. Made (1773) foreign minister after Struensee's fall from ...