336 OUtiianj — Melville AtUcood, F.G.8. 



He invented many appliances for the extraction of gold, also 

 scientific instruments, and the " Attwood amalgamator " has been 

 in general use in California and elsewhere for more than forty years. 

 in 1859 he made the first assays and analyses of the ores from 

 the celebrated Comstock Gold and Silver Yein ; and it was through 

 him that the great riches of the above vein were made known to 

 the world. 



For the last twenty-five years nearly all his spare moments 

 were given to microscopic work ; he prepared his own specimens, 

 and he leaves behind him a most valuable collection of minerals 

 and microscopic slides. He was an intimate and esteemed friend 

 of the late Sir Warington Smyth, Dr. John Percy, Jobn Arthur 

 Phillips, F.E.S., and other well-known scientific men. 



He was able to practise his profession of consulting mining 

 engineer until within a few weeks of his death, which took place at 

 Berkeley, near San Francisco, California, on April 23, 1898, in 

 his eighty-sixth year. His practical experience in gold-mining 

 extended for a period of seventy years, as he was in the Brazilian 

 gold-mines before he reached the age of seventeen. 



He was a Fellow of the Geological Society, a Member of the 

 Academy of Sciences (California), California State Geological Society, 

 and the San Francisco Microscopical Society. The members of the 

 last-mentioned Society attended in a body the funeral on April 26, 

 with numerous old-time friends. 



His contributions to the California Mining Bureau and scientific 

 papers and magazines were numerous. The following is a list of 

 some of his principal writings : — 

 "On the Milling of Auriferous Vein Stones," August 1, 1878: 



California State Geological Society. 

 " Mineralization of Gold," August 20, 1878 : California State 



Geological Society. 

 " On an Improved Form of Batea," August 20, 1878 : California 



State Geological Society. 

 " Wall Eocks of the Bodie Auriferous Lodes," March 4, 1879 : 



California State Geological Society. 

 " Kough Notes on the Geology of Bodie, illustrating the two ages of 

 Gold," June 13, 1881 : San Francisco Microscopical Society. 

 " On the Milling of Gold Quartz," August 20, 1881 : California 



State Geological Society. 

 " On the Milling of Gold Quartz," sequel to above paper, 1882 : 



California State Mining Bureau. 

 " A simple Working Test for determining the quantity of Gold 

 mechanically combined with Auriferous Vein Matter " : 

 California State Mining Bureau. 

 " Gongo Soco Mine," 1896 : San Francisco Microscopical Society. 

 " Macroscopical Examination," February 14, 1897: San Francisco 



Call. 

 " Mineralogy," 1897 : San Francisco Microscopical Society. 



GsoRaE Attwood. 



