Vlll BULLETIK OF THE GEOLOGICAL SOCIETY OF AMERICA 



Beochuees of Volume 19 



HuocHURKS. Pages. Plates. Figures. pP«;^^„V^« th^e^Pubuc. 



The problem of the pre-Cambrian. 

 C K. VaxHise 1-28 S0.20 S0.30 



I5eginiiing and recession of Saint An- 

 thony falls. F. W. Saedeson 29-o2 1-2 1-2 .30 .45 



Wind erosion in the plateau country. 



Whitman Cross 53-62 3-4 .... .15 .25 



Rock-floor interment plains of the 

 arid region. C. R. Keyes 63-92 5 1-7 .30 .45 



Occurrence of proustite and argentite 

 at the California mine, near Slonte- 

 zuma, Colorado. F. R. VanHoex. 93-98 .10 .15 



Probable age of the INIeguma (gold- 

 bearing) series of Nova Scotia. J. 

 E. WooDJi.vx 99-112 6-8 .... .20 .30 



Relations of radioactivity to cos- 

 mogony and geology. G. F. Becker. 113-146 .... .... .30 .45 



Conglomerate formed by a mineral- 

 laden stream in California. R. 

 Arnold and R. Anderson 147-154 9-10 .15 .25 



Lower jiortion of the Paleozoic sec- 

 tion in northwestern K'ew York. 

 H. P. CusHiNG 155-176 11 1 .20 .30 



Topaz-bearing rhyolite of the Thomas 



range, Utah. H. B. Patten 177-192 12-13 .... .20 .30 



Outhnes of hydrology. W J McGee. 193-220 .20 .30 



Geological history of the Redstone 

 quartzite. F. W. Sahdeson 221-242 1 .20 .30 



Nebraska "loess man." B. Shi jiek. 243-254 14-17 1 .25 .35 



Paleozoic and associated rocks of the 

 Upper Yukon, Alaska. A. H. 

 Beooks and E. M. Kindle 2.55-314 18-19 1-2 .60 .90 



Geologic reconnaissance of the Porcu- 

 pine valley, Alaska. E. M. Kindle. 315-338 1 .20 .30 



Giant springs at Great Falls, Mon- 

 tana. C. A. FisHEE 339-346 20 1 .10 .15 



Glacial peiiods and their bearing on 

 geological theories. A.P.Coleman. 347-366 .... .15 .25 



Strata containing the Jurassic flora of 

 Oregon. J. S. Dillee 367-402 .... 1-4 .30 .35 



Paleozoic and Mesozoic of central Wy- 

 oming. N. H. Darton 40.3-470 21-30 .... .80 1.20 



Shoreline studies on lakes Ontario and 



Erie. A. W. G. Wilson 471-500 31-32 1-7 .30 .45 



]Mine waters and their field assav. 

 A.C.Lane !. 501-512 .... 1 .15 .25 



Proceedings of the Twentieth Annual 

 fleeting, held at Albuquerque, 

 Xew Mexico, December 30 and 31, 

 including proceedings of the Ninth 

 Annual Meeting of the Cordilleran 

 Section, held at the same place and 

 time. E. 0. HovEY, hereto-;/ 513-617 33-41 1-3 1.50 2.25 



Ieregulak Pubucations 



In the interest of exact bibliography, the Society takes cognizance of all pub- 

 lications issued wholly or in part under its auspices. Each author if a memoir 

 receives 30 copies without cost, and is permitted to order any additional num- 



