March 11, 1898.] 



SGIENGE. 



351. 



tain such as were distinguished for resistance to 

 drought and heat. 



A MAP of Alaska, showing known gold-bear- 

 ing rocks, with descriptive text containing 

 sketches of the geography, geology and gold 

 deposits and routes to the gold fields, has just 

 been issued by the U. S. Geological Survey, in 

 pursuance of a recent joint resolution of Con- 

 gres.s. These pamphlets are to be had for the 

 asking. There will be 40,000 copies in all. 

 Most of them go to the Congressional document 

 rooms, whence they will be distributed to the 

 public on orders of Senators and Representa- 

 tives ; the remainder issue from the Survey 

 office. The map, which is on a scale of 57 

 miles to the inch, is specially designed for the 

 use of the miners, prospectors and travelers in 

 Alaska. The region represented extends from 

 Bering Strait eastward to the Rocky Moun- 

 tains and British Columbia, and from the 54th 

 parallel northward to the Arctic Ocean, em- 

 bracing the drainage basin of the Yukon River 

 from its mouth to its most distant headwaters. 

 The principal topographic features, as plateaus, 

 mountain regions and valleys, are indicated by 

 hachures. More is known of the valleys and 

 regions bordering the navigable drainage ways 

 than of other portions of the country. Back 

 from the rivers lie extensive rugged tracts still 

 comparatively unexplored. The lines of mag- 

 netic variation are laid down. The Fort St. 

 Michael Military Reservation, on the coast, 

 is outlined. The center of this reservation 

 is St. Michael Island, and it includes the 

 great delta of the Yukon, the head of Norton 

 Sound and Golofnin Bay. The map includes 

 two smaller, local, laTger-scale maps, one of the 

 Fortymile and the Klondike gold-mining re- 

 gions, the other of the mountainous area be- 

 tween the coast and the interior above Linn 

 Canal, showing the passes, routes and trails 

 leading from tide water to the headwaters of 

 the Yukon. It is in part colored, showing at a 

 glance by color and by name where gold and 

 coal have been found, in both the interior and the 

 coastal regions, especially the gold-bearing rock 

 formations of the Fortymile and Birch Creek 

 series. These gold-bearing rocks are seen to 

 trend from the Klondike region for nearly 600. 

 miles northwestward, across the great elbow of 



the Yukon, toward the coast. The descriptive 

 text accompanying the map, consisting of 44 

 pages, contains useful information for the practi- 

 cal prospector and miner. It gives a brief histor- 

 ical, geographical and geological sketch of the 

 country, describing its rivers, mountains, cli- 

 matic conditions, routes, trails and passes, with 

 valuable hints and directions to the traveler 

 down the Yukon concerning the canyon and the 

 dangerous White Horse Rapids. Besides the rock 

 formations of the Fortymile and the Birch Creek 

 series, the original deposits, or gold-bearing 

 quartz veins, are broadly discussed and the 

 probable extent of the gold deposits is indicated. 

 Similar consideration is given to the detrital, or 

 gold-bearing placer gravels, and to the mode of 

 concentration of the coarse gold, its nature, 

 and the manner of its extraction. Valuable 

 metals other than gold, as platinum and copper, 

 are also touched upon. The deposits of coal 

 and lignite are mentioned somewhat fully. 

 They occur mostly in the coastal regions and 

 on the Lower Yukon, though good coal is also 

 found in the Fortymile district, as on Coal 

 Creek. Similar deposits have also been re- 

 ported on the headwaters of the Stewart River, 

 just above the Klondike. 



It is expected that the Dictionary of Philos- 

 ophy edited by Professor J. Mark Baldwin, of 

 Princeton University, and published by The 

 Macmillan Company, will appear early in 1899. 

 The staff of the Dictionary, as now organized, 

 is as follows. Consulting Editors : 



English : Professors H. Sldgwick, Andrew Seth and 

 William James ; German : Professors Windelband, 

 Ziehen, Exner, Miinsterberg ; French : Professors 

 Pierre Janet, L. Marillier, Th. Flournoy and Yves 

 Delage. 



Writers in charge of departments, as follows : 

 Philosophy: Professors Josiah Eoyce, Andrew Seth 

 and John Dewey ; Logic : Professor Adamsou ; Ethics : 

 Professors Sorley and James Seth ; Psychology : Mr. 

 Stout, Professors Cattell, Titohener and Baldwin ; 

 Philology: Professor Wheeler; Physical Science and 

 Mathematics: Professors Simon Newcomb and H. B 

 Fine ; Mental Pathology and Anthropology : Professor 

 Jastrow ; Biology : Professors C. Lloyd Morgan and 

 Minot ; Physiology : Professor Hodge ; Economics : 

 Professor Hadley ; Political and Social Philosophy : 

 Professor Montague, Dr. James Bonar, Professor Gid- 

 dings ; Jurisprudence and Imw : Judge S. E. Baldwin ; 



