VERTISEMENTB. 



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



THE IVES ALTITUDE MAP 



' differing from any elevation r 



3 a novel device by the inventor of the " Strata Ma| 



•fully embo 



nd Mountain Promil re altitudes are emphasized by s 



rasted colors. The Map is beautifully g- 



SIZE 33X23 I 



Aid in the Study of Geology. 



THE IVES STRATA MAP 



graphically ex h : . : ratai w i tn the pi 



to show synclinal or anticlinal folds' ' 











lr»S 



^r^w 







mmEtS=&r 



JAMES T. B. IVES, F. G. S. 



to ^hofXse y^^t°th^mU^ol^^^S,^^] Awarded 



OPINIONS OF EMINENT AUTHORITIES. 



JAMES T. B. IVES, 



Office of the American Naturalist, 



518 Minor Street, Philadelphia, Pa. 



