ILLUSTRATIONS 
Page 
Plate 1—Stereogram of the Shawangunk Mountain............... 23 
2—Lake Mohonk, looking southward............-..006-5-0: 27 
3—Eastern Face of Shawangunk Mountain, looking south- 
CASQWALG » \cse:0  his,c eae viahePnp eines ote ube tatantuega a eee 31 
4—Relief Map of the Chattanooga District................. 63 
5—Map of the Southern Appalachians, showing the deformed 
Cretaceous) Peneplaim::..i.)) sss. v.00 bis ieee 126 
6—Map of the Southern Appalachians, showing the deformed 
Vertiary Peneplaim:t ck vias. 4.5 ee, Pete ee eae eee 126 
La Drow nine thie WO Ee Mb sau tase tocsxeote cc taevcoveyes diate cy-ke Ree eee 127 
8—Map showing the Natural Divisions of the North Ameri- 
Gamoreshsise: 2 cit Some ets heck cates «Glove tca aU ere eee 139 
9= District’ of) Coltmibian-. oie Sitaetiae vee cle cis oe ee 149 
10—A Part of the Map of Juan de la Cosa, 1500, with Vignette ‘ 
of Samana. trom): a eViederni@hanrt waaeeeie. oe e eee 186 
11—Mappa Munde peinte sur Parchemin par Ordre de Henri 
IL; Rode Prance: 1532) Licwar ace dane Geena 188 
12—Map of United States, showing Distribution of the Total 
Quantity of Heat during Season of Growth and Repro- 
ductive: Activity. 20g ae cee te eee 238 
13—Map of United States, showing Mean Temperature of 
Hottest Six Consecutive Weeks of Year............... 238 
14—Map of United States, showing Life Zones............... 238 
15—Membership Diagram, National Geographic Society... . lxxxiii 
Darton: Figure 1—Cross-section of Eastern Ridges of Shawangunk 
Mountain through Lake Mohonk ........... 27 
2—Cross-section of Eastern Ridges of Shawangunk 
, Mountain through Lake Minnewaska........ 29 
3—Lake Awosting.......sdsceene oo: ie oar eee 30 
Hayes and Campseti: Figure 1—Diagram showing Oscillations of 
Land Surface at Chattanooga, 
NennNessee:ane sAaiet ce ge 99 
2—Sketch Map of the Tennessee 
GOregeiis ois see ele eee een 116 
3—Diagram showing Variation in 
Character of Cretaceous and 
Tertiary Sedimentsin Alabama 125 
Fernow: Figure 1—A German Spruce Forest under Management.. 147 
Baxer: Figure 1—District of Columbia. ...............:..5-5 Pen a 
