ILLUSTRATIONS 



Vll 



Plate 54 — Lane : Curves of cooling— margin temperature constant 



55 " Curves of cooling— narrow, effective contact zone 



56 " Curves of cooling— effective contact zone broad 



57 " Tangents to curves of grain — narrow contact zone 



58 " Tangents to curves of grain — broad contact zone 



59 — Collie : New fossils from Bellefonte, Pennsylvania 



60 — JuLiEN : Map of portion of Manhattan island 



61 " Outcrop of pegmatitic micaceous gneiss 



62 " Photomi>3rographs of hornblende schist and hematite in 

 hornblende schist 



63 •* Hornblende schist layers and contact 



64— Crosby : Portrait of Alpheus Hyatt 



65 — Branner: Portrait of James E. Mills, 



Page 

 380 

 381 

 382 

 383 

 384 

 418 

 429 

 433 



435 

 471 

 504 

 512 



HOBBS 



Figures 



Figure 1 — Diagrammatic sketch of meteorite's convex surface. ... 100 



" 2 — Diagrammatic sketch of meteorite's concave surface. . . 103 



" 3 — Perspective view of Algoma meteorite 107 



*' 4 — Diagram showing stream lines about discoid body projected 



into the aerosphere 113 



" 5 — Diagram illustrating movements of spinning top 115 



WiNCHELL : 



Figure 1 — Section across the tunnel parallel with the cross-cut of Mr 



Fowke 147 



FiTLT,ER and Clapp : 



Figure 1 — Sketch map of southwestern Indiana 155 



Adams 



Figure 1— Sketch map of lithologic divisions of the Carboniferous and 



Permian of northern Texas 193 



" 2 — Sketch map of the Carboniferous and Permian of northern 



Texas 195 



** 3 — Sketch map of lithologic divisions of the Carboniferous and 

 Permian of Kansas, Indian Territory, Oklahoma, and 

 northern Texas 



Spencer : 



Figure 



Newsom : 



Figure 



19- 



1 — Submarine channel of the Congo river 222 



2 — Chart of area between Haiti and Central America 223 



1 — Skeleton map of California 228 



2 — Relations of the Graves Creek dikes 230 



3— Dike exposed at 12 233 



4 — Geologic map of the Santa Cruz dike region 236 



5 — Cross-section along the line X-Y, figure 4 237 



6— Diagram of the asphalt quarries 238 



7 — Bituminous sandstone dike at Point quarry 238 



8 — Intrusion of bituminous sand in diatom shales 239 



