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There are many aids towards this end. It is, however, only within 
‘recent years that much of this material so useful to the geologist, as 
well as to the geographer, has come within the reach of the secondary 
schools. The apparatus, which should be found to some extent at least in 
all schools and colleges purporting to teach geography, may be described 
under the following headings: 
1. Photographs and lantern slides. 
2. Maps. 
3. Models. 
1. Photographs.—The collections of photographs, made by the usual 
dealers, furnish very little material that has any special geographical sig- 
nificance. Such collections are usually made with reference to depicting 
some artistic expression in a landscape, and invariably fail to bring out 
such topographic outlines as would be of significance to the student of 
geography. A fairly useful selection can be made from a collection made 
by various members of the Geological Society of America, and placed in 
the hands of a committee for classification and distribution. Further 
information may be obtained by applying to G. P. Merrill, Washington, 
D. C., or to Prof. F. L Fairchild, Rochester, N. Y. 
Lantern slides are even more useful than photographs because they 
present a more vivid picture, and details more easily discerned. Moreover, 
the relation of parts are more clearly brought out because of the enlarge- 
ment; in fact, it is the next best to seeing the actual thing illustrated. 
In the use of the lantern, however, care should be taken not to introduce 
this method of illustration as simply a species of entertainment, but rather 
as an essential part of the course to be absorbed by the student as well 
as text or lecture. 
What has been said of the insufficiency of the dealers’ photograph 
collections is equally true of their lantern-slide collections. An examination 
of the stock of a number of dealers furnished but little useful material. 
This long-felt want has in part been supplied by Prof. W. M. Davis, who 
has made a very excellent collection of about one hundred and fifty slides, 
illustrating the prominent and essential features of the forms of the land, 
rivers, lakes, glaciers, shorelines, waves, etc. The entire collection may 
be obtained from E. E. Howells, Washington, D. C. 
In the interest of Indiana geography, it is proposed to make a collec- 
