J0NE 2, 1916] 



SCIENCE 



779 



Mines. Its ore concentration method seems 

 to have also been highly successful. After 

 mining its quota of ore from the Crucible Steel 

 Mining & Milling Co.'s property, the institute 

 came into the market as a purchaser of ore. 

 In the later half of the year Dr. W. A. Schles- 

 inger and associates established a radium re- 

 duction plant in Denver. They acquired an 

 interest in the Copper Prince claims, from 

 which ore was mined, and bought a further 

 quantity. Ore carrying about 5,000 pounds of 

 uranium oxide, containing about 640 milli- 

 grams of radium, was treated during the year. 

 The Carnotite Reduction Co., made up of Dr. 

 H. ]Sr. McCoy of the IJniversity of Chicago 

 and associates, purchased from Galloway and 

 Belisle a quantity of ore which had been stored 

 in Placerville, Colo., and the radium will be 

 extracted in Chicago. The company will mine 

 ore from claims it has bought. The Standard 

 Chemical Co. did no work on its claims except 

 that required by law, but in this work pro- 

 duced and shipped a quantity of ore from its 

 properties in Colorado and Utah, and pur- 

 chased, it is stated, a considerable number of 

 claims. It was reported in December that the 

 company had produced a total of 14 grams of 

 radium (elemental) and that its ore had aver- 

 aged 1.7 per cent, uranium oxide. Probably 

 between 4 and 5 grams of this quantity were 

 produced during 1915. The production of 

 radium salts in this country during the year 

 was probably nearly 11 grams. 



Mr. Baenum Brown returned to the Amer- 

 ican Museum of ITatural History in January, 

 bringing a carload of fossil dinosaur bones, 

 chiefly from the Belly Eiver Cretaceous forma- 

 tion of Alberta. The collection comprises two 

 complete skeletons ; one of the horned dinosaur 

 Ceratops, of which the museum previously pos- 

 sessed only skulls; the other of the helmeted 

 dinosaur Btephanosaurus, not before repre- 

 sented in the museum's collection. Other 

 notable specimens are a complete skull and 

 jaws of the horned dinosaiu- Monoclonius; a 

 skull and part of the skeleton of an armored 

 dinosaur; and the largest skull yet discovered 

 (five feet in length) of the duck-billed diuo- 

 saaxv, Trachodon. Another very rare specimen 



is a complete lower jaw of a cretaceous mar- 

 supial mammal. In addition to the vertebrate 

 remains, two large silicified tree trunks were 

 secured, over forty feet in length. When these 

 are sectioned it will be possible to determine 

 the genus to which they belong. They are of 

 especial interest because the center of the tree 

 is silicified, while surrounding it the outer por- 

 tion had carbonized, forming lignite. Several 

 large slabs were also obtained on which im- 

 pressions of many species of leaves are beau- 

 tifully preserved. This material will be dis- 

 played to show the type of foliage contempo- 

 raneous with the dinosaur life of Alberta. 

 After bringing to completion the museum's 

 work on the Red Deer River, which has ex- 

 tended over a period of six years and been pro- 

 ductive of four and a half carloads of valuable 

 fossils, Mr. Brown went to Northern Montana. 

 Here he secured a large collection from the 

 Upper Cretaceous beds on Milk River. Work 

 was continued in this field until zero weather 

 compelled cessation of operations. 



The Philadelphia Academy of Surgery an- 

 nounces that essays for the Samuel D. Gross 

 prize of fifteen hundred dollars will be re- 

 ceived until January 1, 1920. The condi- 

 tions are that the prize " shall be awarded 

 every five years to the writer of the best orig- 

 inal essay, not exceeding one hundred and 

 fifty printed pages, octavo, _in length, illus- 

 trative of some subject in surgical pathology 

 or surgical practise, founded upon original in- 

 vestigations, the candidates for the prize to be 

 American citizens." 



UNIVERSITY AND EDUCATIONAL 

 NEWS 



Dr. John C. Duncan has been appointed 

 professor of astronomy and director of Whitin 

 Observatory of Wellesley College. Professor 

 Sarah F. Whiting retires at the close of the 

 present academic year as does also Professor 

 Ellen Hayes. Professor Whiting, a pupil of 

 Professor E. C. Pickering at the Massachu- 

 setts Institute of Technology before he became 

 director of Harvard Observatory, gave the first 

 lectures in astronomy at Wellesley College in 



