The Mineralogical Magazine and Journal of the Mineralogical Society
THE MINERALOGICAL MAGAZINE AND JOURNAL OF THE MINERALOGICAL SOCIETY No. 131. December, 1930. Vol. XXII. Biographical notices of mineralogists recently deceased. (Fourth series.) 1 By L. J. SPENCER, M.A., Sc.D., F.R.S. Keeper of Minerals in the British Museum of Natural History. [Communicated June 3, 1930.] N the following list of 40 lives, with a range in ages from 32 to I 91 years, the average age is 68.2 years. Including previous lists, the average of 384 lives is 64.9 years. ARAUJO FERI~AZ (Jorge Belmiro de) [1883-1926], Brazilian mineralogist, was born at Rio de Janeiro on August 30, 1883, the son of Baron de Arau]o Ferraz, and died there on February 7, 1926. He studied at the polytechnic school of his native city, taking the degree of doctor in civil engineering. After teaching physics and chemistry in the municipal school at Rio de Janeiro and in the School of Mines at Ouro Preto, he was appointed petrographer on the Geological and Mineralogical Survey of Brazil, of which for a time he acted as director. Dr. Araujo Ferraz had an extensive private collection, and he was responsible for the display of Brazilian minerals at the Torino exhibition in 1911 and at the Brazilian centenary exhibition in 1922. He translated and edited E. Hussak's work, ' 0s satellites do diamante' [Min. Mag. 18-148], and for many years had worked on a mineralogy of Brazil, portions of which have been edited by A. Roeeati [Min. Abstr. 3-446]. The mineral ferrazite, named after him; is one of the ' favas' from the Brazilian 1 Series I-III in Min.
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