ILLUSTRATIONS 



Page 



Plate 1 — Claudius Ptolemy Map, circa ]50 1 



2 — Chroiiicon Nui'embergense Map, 1493 2 



3— Toscanelli Map, 1474 4 



4— Juan de la Cosa Map, 1500 17 



5— Euyscli Map, 1508 18 



()— The total urban and I'ural Population at each Census .... 22 



7 — Settled Area of the United States ■ 25 



8 — Position of the Center of Pojjulation at the close of each 



Decade from 1790 to 1890 27 



9 — Density of Population 28 



10— Distribution by Families and Sex 31 



11 — Distribution by Color 33 



12— Constituents of the total Immis2:ration and of the Immi- 

 gration between 1880 and 1890 35 



13— Distribution by Nativity 37 



14 — Distribution of the Foreign Born 38 



15— Distribution of the Foreign Born 39 



16— Distribution of the Foreign Born 40 



17 — Elements of the Population of great Cities 41 



18 — Rates of Increase of all Whites, and of the native Ele- 

 ments of the North, and of all Whites of the South. . . 42 

 19— Population at each Census classified by Race and Nativity . 43 



20— Simple Types of Rainfall Distribution 45 



21 — Natural Bridge, Virginia 59 



Hubbard : Figure 1 —Magellan's Circumnavigation . 1 . 



2 — Drake's Circumnavigation 16 



AValcutt : Figure l^Attitude of Strata at Natural Bridge 60 



Mendexhall: Figure 2 — Triangulation in the Vicinity of Mount 



Saint Elias 65 



Dillkk: Figure 3 —Relations of older and younger Forests to vol- 

 canic Sand 95 



(V) 



