ALFRED

See also:

• LOUIS
• LOUIS (804–876)
• LOUIS (893–911)
• LOUIS, JOSEPH DOMINIQUE, BARON (1755-1837)
• LOUIS, or LEWIS (from the Frankish Chlodowich, Chlodwig, Latinized as Chlodowius, Lodhuwicus, Lodhuvicus, whence-in the Strassburg oath of 842-0. Fr. Lodhuwigs, then Chlovis, Loys and later Louis, whence Span. Luiz and—through the Angevin kings—Hungarian

LOUIS

See also:

• OLIVIER, JUSTE DANIEL (1807-1876)

OLIVIER LEGRAND

See also:

• DES

DES CLOIZEAUX (1817–1897)  , French mineralogist, was born at Beauvais, in the department of Oise, on the 17th of October 1817 . He became professor of mineralogy at the Ecole Normale Superieure and afterwards at the Musee d'Histoire Naturelle in Paris . He studied the geysers of Iceland, and wrote also on the classification of some of the eruptive rocks; but his main work consisted in the systematic examination of the crystals of numerous minerals, in researches on their optical properties and on the subject of polarization . He wrote specially on the means of determining the different fe&spars . He has awarded the Wollaston medal by the Geological Society of London in 1886 . He died in May 1897 . His best-known books are Lecons de cristallographie (1861); Manuel de mineralogie (2 vols., Paris, 1862, 1874 and 1893) .