512 



SCIENCE 



LN. S. Vol. XXV. No. 639 



Dr. Francisco de Paula Oliveira will pro- 

 ceed with his studies of the coal deposits of 

 Santa Catharina and Rio Grande do Sul. 



Professor O. A. Derby, the chief of the 

 service, is a native of the state of New York, 

 having been bom at Kelloggsville in 1851. 

 He entered Cornell University in 1869, gradu- 

 ated in 1873, and took his master's degree in 

 1874. He accompanied Professor Hartt to 

 Brazil in 1870, 1871 and again in 1872. In 

 1874 Professor Hartt went to Brazil, leaving 

 Mr. Derby as assistant in charge of the de- 

 partment of geology at Cornell. A geological 

 survey of Brazil (Commissao Geologica do 

 Brazil) was inaugurated in 1875 with Pro- 

 fessor Hartt as chief, and on this Mr. Derby 

 was appointed assistant geologist. He reached 

 Eio de Janeiro in 1875, and he has lived in 

 Brazil ever since. He was connected with the 

 geological commission as long as it lasted; 

 upon its suspension and after the death of 

 Professor Hartt he was appointed director of 

 the geological section of the national museum 

 in Eio de Janeiro. In 1886 he was made 

 director of the geological and geographical 

 survey of the state of Sao Paulo, a position 

 which he retained until 1905, when he re- 

 signed. 



Among the authorities upon Brazilian 

 geology Professor Derby is facile princeps. 

 His papers on the subject number something 

 over one hundred, and other writers upon 

 Brazilian geology have also drawn largely 

 upon his rich store of information. In addi- 

 tion to his own direct contributions he has 

 been instrumental in getting the cooperation 

 of many of the best specialists in the world 

 to work up and describe special collections. 

 For example, the ' Cretaceous Paleontology ' 

 of Brazil by Dr. C. A. White and the ' Paleo- 

 zoic Faunas of Para ' by Dr. John M. Clarke 

 are monumental contributions to the geology 

 of Brazil that were made possible by Mr. 

 Derby's efforts and cooperation. The well- 

 knovrai writings upon Brazilian mineralogy 

 and petrography by Dr. E. Hussak were also 

 made possible by Professor Derby's appoint- 

 ment of that able geologist to a position on 

 the Sao Paulo survey. Among Mr. Derby's 

 most noteworthy direct contributions to geo- 



logical literature are his papers on the origin 

 of diamonds, on the nephelene rocks of Brazil, 

 and on the geology of the lower Amazonas. 



Dr. Gonzaga de Campos is a native of the 

 state of Maranhao, where he was born in 

 1857. After completing the preparatory 

 course in the Polytechnic School of Rio de 

 Janeiro, he entered the newly established 

 School of Mines at Ouro Preto as one of its 

 first students, graduating with honors in 

 1880. He did private work for a year, when 

 he was called as assistant to the geological 

 Survey of the state of Sao Paulo, then being 

 carried on under the direction of Professor 

 Derby. He has published ten important 

 papers upon Brazilian geology. Of these 

 papers, one upon the coal deposits of Santa 

 Catharina, another upon the diamond de- 

 posits of Agua Suja of Minas, and a third 

 upon the bituminous shales of Marahu in 

 Bahia are especially worthy of mention. 



Dr. Miguel Arrojado R. Lisboa is a native 

 of the city of Rio de Janeiro, where he was 

 born in 1872. He is the grandson of the 

 Baron of Japurti, who was some time Brazilian 

 minister at Washington. His technical train- 

 ing was received at the School of Mines at 

 Ouro Preto, where he graduated in 1894. 

 After graduation he was employed as geolo- 

 gist by Barao de Capanema and later he en- 

 tered the topographic corps engaged in map- 

 ping the state of Eio de Janeiro. Prom 1898 

 to 1900 he studied at the University of Berlin 

 and in Paris and, returning to Brazil, opened 

 an office as mining engineer and consulting 

 geologist in Rio de Janeiro. Dr. Lisboa is 

 the author of about a dozen papers upon the 

 geology and mining industries of Brazil. The 

 most important of these are upon the Brazil- 

 ian manganese deposits, the monazite sands, 

 and the iron industry of Brazil. The Jan- 

 uary, 1907, number of the American Journal 

 of Science contains an article by Dr. Lisboa 

 upon facetted pebbles found by him in the 

 interior of Brazil. 



The other assistant. Dr. Francisco de Paula 

 Oliveira, is also a native Brazilian, and a 

 graduate of the School of Mines at Ouro 

 Preto. He is an active and prolific writer, 

 being the author of seventeen papers upon the 



