LIST OF PLATES 



Secretary's Report: Page 



Plates 1, 2 28 



Weather and sun's radiation (Abbot) : 



Plate 1 93 



Sun's place among the stars (Adams) : 



Plates 1-5 152 



Surface features of the moon (Wright) : 



Plates 1-4 182 



Cosmic radiation (Johnson) : 



Plates 1-4 214 



Nucleus of the atom (Anderson) : 



Plates 1, 2 248 



Absolute zero (Simon) : 



Plate 1 264 



Salinity of irrigation water (Scofield) : 



Plates 1-3 288 



Selenium absorption by plants (Hurd-Karrer) : 



Plates 1-6 302 



Extinct volcano (Atwood) : 



Plates 1-6 320 



Concretions (Bassler) : 



Plates 1-3 326 



Genetics (Morgan): 



Plates 1, 2 352 



Pacific halibut (Thompson) : 



Plates 1, 2 382 



Swallowtail butterflies (Clark) : 



Plates 1-14 408 



Algae (Meier): 



Plates 1-8 428 



Boulder Canyon project (W. R. Nelson) : 



Plates 1-10 __. 452 



Wings over the sea (Bl^riot): 



Plates 1-5 _. 462 



Coming of man from Asia (Hrdlicka) : 



Plate 1 463 



Southwestern archeology (Roberts) : 



Plates 1-9 534 



Nuzi and the Hurrians (Pfeiffer) : 



Plates 1, 2 558 



Ruins of Tenampua (Popenoe) : 



Plates 1-5 572 



VII 



