596 



SCIENCE 



[N. S. Vol. XXV. No. 641 



distribution of coal and iron, of oil and gas, 

 of cements, phosphates, and glass, of gold, 

 silver, copper, lead, and zinc. The minerals 

 and ores whose distribution is shown on the 

 economic maps will be illustrated by a small 

 collection of specimens in an adjoining case. 



The colored geologic map of North America, 

 which was prepared by the Survey in coopera- 

 tion with the Geological Surveys of Canada 

 and Mexico for the International Geologic 

 Congress, which met in Mexico last fall, will 

 also be exhibited. 



A collection of coals and other economic 

 minerals, the distribution of which is shown 

 on the economic maps, will be presented. 



On the ilat surface of a map it is difficult to 

 show clearly the relief of the country repre- 

 sented, but by means of a model it can be 

 fully expressed. For this reason a number of 

 models have been prepared to illustrate some 

 of the most important relief features and 

 economic resources of the country tributary to 

 the Jamestown Exposition. These include 

 geologic models of the southern Appalachian 

 region, the New River coal field, and the 

 Philadelphia region, a topographic model of 

 the Atlanta-Chattanooga region and a topo- 

 graphic and geologic model of Alaska. A col- 

 lection of Alaskan minerals will be especially 

 interesting when studied in connection with 

 the model of Alaska. 



The educational series of rock specimens 

 prepared by the Survey for teaching geology 

 will be exhibited. Two hundred similar col- 

 lections, each containing 156 specimens illus- 

 trating the various types of rocks, have been 

 distributed to the universities and colleges of 

 the country. 



The machine used by petrographers for 

 grinding thin sections of rocks will be ex- 

 hibited. The method of preparing thin sec- 

 tions and their kaleidoscopic appearance under 

 a polarizing microscope will be illustrated. 



A complete set of survey publications, in- 

 cluding topographic and geologic maps, an- 

 nual reports, monographs, professional papers, 

 bulletins, water-supply papers, and mineral re- 

 sources will be on file. 



The method of storing and arranging the 

 large number of maps and folios for con- 



venient use in public and private libraries has 

 been given much attention, and the best cases 

 yet devised for the purpose are exhibited. 



RESEARCH FELLOWSHIPS IN ENOINEER- 



ING AVAILABLE AT THE UNIVERSITY 

 OF ILLINOIS 



The University of Illinois has extended and 

 strengthened the field of its graduate work in 

 engineering by recently establishing ten Re- 

 search Fellowships in the Engineering Ex- 

 periment Station. These fellowships have an 

 annual value of $500, and ara open to gradu- 

 ates of approved universities and technical 

 schools, both American and foreign. They 

 must be accepted for two consecutive col- 

 legiate years, at the expiration of which period, 

 if all requirements have been met, the Master's 

 degree will be granted. Preference will be 

 given to men who have had some experience 

 in practical engineering work outside of col- 

 lege. The appointments will be made upon 

 the recommendation of the Station StaS of 

 the Engineering Experiment Station, and 

 upon the approval of the Faculty of the 

 Graduate School and the President of the 

 University. 



The Engineering Experiment Station, it 

 may be explained, is a department connected 

 with the College of Engineering. It was 

 established in 1903 for the purpose of carry- 

 ing on investigations along various lines of 

 engineering, and for the study of problems 

 of importance to professional engineers and 

 to the manufacturing and industrial interests 

 of the state. The work of the station and the 

 college is closely related, the heads of the 

 several departments of the college of engineer- 

 ing constituting the station staff. The in- 

 vestigations are carried on by the members 

 of the staff directly, sometimes by a fellow 

 as graduate work, sometimes by a member of 

 the instructional force of the college, and 

 frequently by special investigators belonging 

 to the station corps. 



The various laboratories of the station and 

 the college offer exceptional facilities for in- 

 vestigational work, being well-equipped with 

 the most modern apparatus. During the 

 past four years about $300,000 has been appro- 



