LIST OF ILLUSTRATIONS. 



Secretary's Keport: 



Map showing Correspondents 

 of International Exchange 



Service 26 



Beaver Dam in Zoological 



Park 62 



Swan's Nest in Zoological 



Park 64 



Floor plan of Exhibit at Ten- 

 nessee Exposition 100 



Photography op Lunar Surface 

 (Loewy and Puiseux) : 



Platel 108 



Plate II 112 



Plate III 122 



Infra-red Radiations: 



Fig.l 163 



Fig.2 164 



Curiosities of Vision: 



Fig.l 199 



Fig.2 200 



Figs. 3, 4 201 



Fig.5 202 



Fig.6 203 



Fig. 7 205 



Figs.8,9 206 



Signaling through Space with- 

 out Wires : 



Fig.l 251 



Fig.2 253 



Fig.3 255 



Figs.4,5 256 



Liquefaction of Hydrogen and 

 Helium : 



Fig.l 262 



Tundras and Steppes (Geike) : 



Colored map, Plate I 348 



Modification of Great Lakes: 



Figs. 1,2 350 



Fig.3 351 



Fig.4 355 



VIII 



Modification of Great Lakes — 

 Continued. 



Fig.5 356 



Fig.6 357 



Fig.7 358 



Plan of the Earth and its 

 Causes : 



Fig.l 365 



Fig.2 367 



Fig.3 370 



Fig.4 374 



Fig.5 375 



Fig.6 377 



Fig.7 385 



Funafuti: The Story of a 

 Coral Atoll: 



Fig.l 391 



Fig.2 392,393 



Fig.3 394 



Fig.4 395 



Fig.5 396 



Fig.6 405 



Pithecanthropus Erectus (Du- 

 bois) : 



Fig.l 446 



Fig. 2 452 



Fig.3 455 



Fig.4 459 



Platel 448 



PlateH 450 



Platelll 456 



Transportation and Lifting of 

 Heavy Bodies (Watkins) : 



Fig.l 617 



Platel 616 



Platell 618 



Platelll 618 



PlatelV 620 



Origin of African Civilizations 

 (Frobenins) : 



Colored Map, Plate I 650 



