ADVERTISEMENTS. 
T he Ives Strata ° Altitude Maps 
Ur THE UNITED STATES AND PART OF CANADA. 
By James T. B. Ives, F. 
S., Member of the American Institute of Mining Engineers, the American 
Association de the Advancement of Science, and the Canadian Institute. 
THE STRATA MAP 
consists of a serie 
ven iter Systems of the 
tfy TUE as recommended byt the promos paw 
It fusum exhibits superposition, denud- 
ation, and outcrop of strata, with the phenom- 
ena of escarpments, outliers, inlters, dip, strike, 
conformability, etc., and the Cards may be bent 
to show synciinal or anticlinal folds. 
THE ALTITUDE MAP 
is a novel device by the sri 
of the ** Strata 
ously p Vi SU TK su car 
e being 
Pro 
The Map is beautifully gotten "p fram 
wall or stand erect able 
iru oggi dida banana ng 
in oak a NE and gone to hang on the 
iffering from any elevation map pre 
The two Mui are contained in a neat utram case, gilt lettered. 
Siz 
e, 21x15 in 
ches. 
Price, 
BINDER & KELLY, Publishers, 
AMERICAN NATURALIST OFFICE, 
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1293 
