LIST OF PLATES. 



Tornadoes (Ward) : Page. 



Plate 1 140 



Langlev (Leffmann) : 



Plate 1 157 



Plates 2, 3 15S 



Plates 4, 5 162 



Plates 6, 7 164 



Plates 8, 9 166 



High Pressure (Bridgman) : 



Plate 1 18S 



Sphagnum (Nichols) : 



Plate 1 224 



Plate 2 230 



Plate 3 232 



Plate 4 234 



Reptile Reconstruction (Gil- 

 more) : 



Plates 1-6 280 



Cave Deposit (Gidley) : 



Plates 1-6 2SS 



Paleobotany (Berry) : 



Plate 1 334 



Plate 2 338 



Paleobotany (Berrv)— Contd. Page. 



Plate 3 342 



Plate 4 378 



Plate 5 382 



Plate 6 402 



Insect Evolution (Chetverikov) : 



Plate 1 446 



Marine Camoufleurs (Longley) : 



Plates 1-5 4S6 



Foot Plow (Cook) : 



Plates 1-4 492 



Sun Worship (Fewkes) : 



Plate 1 49S 



Plate 2 502 



Plate 3 506 



Plate 4 508 



Plate 5 510 



Plate 6 512 



Plate 7 514 



Plate 8 51S 



Plate 9 520 



Plate 10 522 



Plate 11 524 



VII 



