60 
Martha’s Vineyard Sheet, horizontal scale, 1”=1 mile; vertical scale, 
1”=400 feet. 
Cape Cod, horizontal scale, 1”=1.5. miles; vertical scale, 1”—600 feet. 
Amsterdam Sheet,* New York, horizontal scale, 1”=1 mile; vertical scale, 
1”=1,000 feet. 
The following models are in process of construction: Boston Harbor 
Sheet, Mass., and the Sun Prairie Sheet, Wisconsin. These models will 
show some very excellent types of glacial topography. The completed 
series of models illustrate some of the most common and conspicuous 
types of topography and geological structure. It is, indeed, just the kind 
of material that should be found in the laboratories of the secondary 
schools. In order that some assistance may be given in this direction, the 
geological department has preserved the negatives of the models men- 
tioned. From these any number of positives may be prepared; and it is 
proposed to supply copies of one or more of these to any high school de- 
siring to establish a geographical laboratory. Copies will be sold at the 
cost of construction, so that the school with but meagre appropriations. 
can at least make a beginning by adding one model each year to the labo- 
ratory equipment. It is hoped that the high schools of the State will not 
be slow in taking advantage of the opportunity here offered. Effective 
work in geography can not be done without a laboratory; and of the kinds. 
of available material mentioned, maps and models should form a promi- 
nent part of the equipment. The writer will gladly correspond with any 
one desiring further information. 
Geological Laboratory, Indiana University. 
“Constructed by E. R. Cumings, Instructor in the Department of Geology, Indiana 
University. 
