STATE GEOLOGIST, Sl 
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go or 100 feet above the top of an all concrete base which is itself 50 or 
60 feet in height above the surface of the island. The interior surface 
of all the concrete is as good as the day it was built. In places where it 
has been cut into, the material appears more refractory than ordinary 
building stones. The surface of the base was plastered with cement 
mortar after the construction forms were removed and this mortar 
surface shows an immense number of hair-cracks which give the base an 
unseemingly appearance, but which do not injure the strength of the 
foundation. These cracks do not appear on surfaces not exposed to 
rapid drying. ‘The base is built of a natural cement concrete having the 
following proportions, 2 parts Rosendale cement, 2 parts sand, 3 parts 
small broken stone and 4 parts of 2 inch stone. Above ground the pro- 
portions are 1 Portland cement, 1 Rosendale cement, 5 sand and 6 
stone. The total height of the statue above water level is 324 feet. 
Figure 27 shows the lower base of the statue of Liberty. Close examina- 
tion will disclose the hair-cracks so common to plastered surfaces. Figure 
28 shows the Statue of Liberty. 
Fig. 27.—Concrete Foundation Statue cf Liberty, New York Harbor. 
6—S. G: 
