808 



SCIENCE 



[N. S. Vol. XXVI. No. 675 



complexity must necessarily make itself felt 

 more and more by workers who wish, to follow 

 the course of medical thought, and are not 

 content to take their references at second- 

 hand." 



Statistics collected by the United States 

 Geological Survey show that Colorado still 

 outranks any other state or territory in the 

 union, including Alaska, in the production of 

 the precious metals, despite the fact that the 

 gold production of the state in 1906 fell short 

 nearly $2,000,000 of that of 1905, the precise 

 jSgures being, output $23,210,629, decrease 

 $1,813,344. More than half of the total gold 

 of the state is derived from the telluride veins 

 of Cripple Creek in Teller County. San 

 Miguel free-milling ores contribute nearly 

 $2,500,000. The smelting ores of Leadville, 

 in Lake County, yielded $1,500,000 and the 

 partly free-milling Gilpin County ores over 

 $1,000,000. San Juan County and Ouray 

 County both closely approached the million- 

 dollar mark. Important diminution in the 

 output is recorded in Teller and Ouray coun- 

 ties, but this was partly offset by gains in San 

 Miguel and other counties. Siliceous and dry 

 ores formed 67 per cent of the total tonnage 

 and were the source of over 96 per cent, of the 

 gold product. The placer output is compara- 

 tively small. The outlook for 1907 does not 

 indicate the probability of great increase, if 

 any. The production of silver, 12,216,830 

 ounces, showed an increase of 717,523 ounces. 

 The smelting ores of Lake County led in the 

 output, with nearly 4,000,000 ounces, while in 

 their order Pitkin, San Miguel, Mineral, San 

 Juan, Ouray and Clear Creek counties are 

 next in importance, the first three exceeding 

 the million mark. A higher price increased 

 the value of the product. The increase is due 

 chiefly to the veins of San Juan, San Miguel 

 and Mineral counties. On the other hand, 

 the yield of the Leadville and Aspen deposits 

 diminished. About half of the silver product 

 of the state is derived from siliceous or dry 

 ores, 28 per cent, from lead ores and 17 per 

 cent, from zinc or zinc-lead ores. No great 

 change is expected in the production of silver 

 for 1907. The Geological Survey will publish 

 during December an advance chapter from 



" Mineral Resources of the United States, 

 Calendar Tear 1906," containing a discussion 

 by Waldemar Lindgren, geologist, of the gold 

 and silver production of the United States in 

 1906. y,, ,j 



UNIVERSITY AND EDUCATIONAL NEWS 



The memorial committee of the Alumni 

 Association of the University of Michigan 

 has the satisfaction of seeing the foundations 

 laid of the future Memorial Hall. The eon- 

 tract which has been let calls for the enclosed 

 building only, without the internal furnish- 

 ings, for $107,103.00. The university has 

 promised an additional $50,000 as soon as the 

 sum raised reaches $132,000.00. The building, 

 which stands on the southwest corner of the 

 campus, will contain, in addition to the Me- 

 morial Hall, which is to be lined with tablets, 

 paintings, and statues of famous alumni of 

 the university, accommodations for the entire 

 art collection of the university, a small but 

 convenient auditorium, and accommodations 

 for the Alumni Association, as well as a room 

 for social gatherings. 



Professor Cleveland Abbe, of the United 

 States Weather Bureau, has presented to ths 

 Johns Hopkins University a collection of 

 books and pamphlets dealing with meteorology. 



Dr. Scofield, of Benson, Minn., has pre- 

 sented the valuable geological collection that 

 was left him by his father to the University of 

 Minnesota. 



The botanical department of Syracuse Uni- 

 versity has announced several new courses in 

 forestry for next year. Dr. W. L. Bray, ap- 

 pointed to succeed Dr. J. E. Kirkwood, as pro- 

 fessor of botany, is interested in forestry, and 

 it is said that the new courses will probably 

 lead to the establishment of a department of 

 forestry. 



DocENTS O. Grosser and 0. Stoerk have 

 been named, respectively, an extraordinary 

 professor of anatomy and extraordinary pro- 

 fessor of pathological anatomy, in the Uni- 

 versity of Vienna. 



Dr. Edward Baban has been named titular 

 professor of physiology in the Bohemian Uni- 

 versity of Prague. 



