Gold very fine and scaly on bed-rock. Out of 650 diamonds found in this deposit only one had as great a value as $250. According to King in “U. S. Geol. Survey Report," Second Annual Report, 1880-81, p. 379, the fineness of specimens of California gold as determined by him was as follows: Eighty specimens averaged .883.6 fine (p. 382). Dana's Mineralogy" says: "California gold fineness averages .875 to .885. Average, .880." King places the average fineness of gold from the different parts of the United States as follows: NOTE. The larger portion of this table was compiled from Whitney's "Auriferous Gravels.' INDEX. Abbey, R., on yield of French Hill | Ancient alluvial gold deposits, Most, Aktolik River and Valley, Siberia, 23, Aquileia, Italy, 15. Allison Ranch Mine, Nevada Co., Cal., | Area of wrought-iron pipes, 161. 48. Altai, Siberia, 20, 22, table lii. Ariége River, France, 16. Arrow, New Zealand, 36. Asiatic Islands, 18. Alvarez, Expedition to Gulf of Cali- Asia Minor, 15. fornia, 42. Amador Canal Company, Cal., tables Asphaltum in California, 72. xiii., xv., 270. Amador County, Cal., 66. Asphaltum coating for iron pipes, 167. Atchinsk, Siberia, 20, 24, table lii. Amalgam, 205, 249, 258, 266, tables Atrato River, U. S. of Colombia, 29. American Hill, Nevada Co., Cal., 49. Attaki, Egypt, 16. Attwood, Melville, quoted, 203. Australasia, 30-37. American Mine, Nevada Co., Cal., 180, Australia, 83, 205, table lii. |