1923] 



CORWIN, IN SEARCH OF SLIDE MATERIAL 



63 



In the case of Geography and Industries, with special reference to 

 the needs of classes in the City schools, the situation is otherwise. 

 True, it happens that certain of the slides prepared by the Curators of 

 Geology or Botany, for example, have distinct value in teaching geog- 

 raphy or industries, but in the main the securing of slides to illustrate 

 these subjects is the concern of the Department of Extension. 



As a general practice the Department has in the past depended for 

 the "makings" of geographical and industrial slides upon photographs 

 loaned by tourists, manufacturing establishments, chambers of com- 



FlG. 31. — The steamer "Christopher" at her coal dock on the 

 Menomonee Canal, Milwaukee. 



merce of different cities, and similar agencies. Last summer a more 

 direct method of obtaining lantern slide material was employed; and 

 as the result of a field trip taken by the writer in August, the Museum's 

 collection of geographical and industrial lantern slides was enriched to 

 the extent of several hundred new and valuable illustrations. The trip 

 was made possible largely through the courtesy and generosity of 

 officials of the Wisconsin Great Lakes Coal and Dock Company, who 

 provided passage for the writer on one of the Company's coal carrying 

 steamers, the "Christopher," from Milwaukee to Ashtabula, Ohio, 



