Hills, Valleys and Plain s of the U. S. 



THE IVES ALTITUDE MAP 



is a novel device by the inventor of the "Strata Map" differing from any elevation man 



1' '-'- - — ■ :. • • , .. ^ ... ■ "■ . 



trasted colors. The Map is beautifully gotten up, framed in oak and varnished. 

 SIZE 33 X 23 INCHES. PRICE $9.50. 



Aid in the Study of Geology. 



THE IVE5STRATA MAP 



JAMES T. B. IVES, 

 Office of the American Naturalist, 



JIS Minor Street. Philadelphia, Pa. 



