PUBLICATIONS OF THE GEOLOGICAL SOCIETY OF AMERICA 



Eegular Publications 



The Society issues a single serial octavo ])nblication entitled Bull^ctin of the 

 Geological Society of America. This serial is made up of proceedings and memoirs. 

 the former embracing the records of meetings, with abstracts and short papers, list 

 of Fellows, etcetra, and the latter embracing larger papers accepted for publica- 

 tion. The matter is issued as rapidlj' as practicable, in covered brochures, which 

 are at once distributed to Fellows and to such exchanges and subscribers as desire 

 the brochure form of distribution. The brochures are arranged for binding in 

 annual vohimes, which are elaborate!}' indexed. To this date twelve volumes 

 have been published and an index to the first ten volumes. 



The Bulletin is sold to Fellows of the Society and to the public either in sepa- 

 rate brochures or in complete (unbound) volumes. The jmces are as follows : To 

 libraries and to persons residing outside of North America, five dollars ($5.00) per 

 volume; to persons in North America, not Fellows of the Society, ten dollars 

 ($10.00) per volume (the same amount as the annual dues of the Fellows) ; to Fel- 

 lows of the Society, a variable amount, depending on the cost of publication. 

 These prices cover cost of transmission to all parts of the globe. No reduction is 

 made to dealers. Subscribers should specify whether they desire the brocluires or 

 the completed volume. Orders should be addressed to the Secretary, and drafts 

 and money orders made payable to the Secretary of the Geological Society of America, 

 Rochester, New York. 



DESCRIPTIONf OF THE PUBLISHED VOLUMES 



\ 



Volumes. Pages. Plates. Figures. Price to Fellows. 



Vol. 1, 1889 593 + xii 13 51 $4.50 



Vol. 2, 1890 6G2 + xiv 23 63 4.50 



Vol. 3, 1891 .')41 + xi 17 72 4.00 



Vol. 4, 1892 45S + xi 10 55 3.50 



Vol. 5, 1893 6()5 + xii 21 43 4.00 



Vol. 6, 1894 528 -H X 27 40 4.00 



Vol. 7, 1895 558 4- X 24 61 4.00 



Vol. 8, 1896 446 + X 51 29 4.00 



Vol. 9, 1897 460 + X 29 49 4.00 



Vol. 10, 1898 534 + xii 54 83 4.00 



Index to first ten volumes 209 .. .. 2.25 



Vol. 11, 1899 651 + xii 58 37 4.50 



VqJ. 12, 1900 538 + xii 45 28 4.00 



Brochures op Volume 12 



BROciirRi-.s. PA.iES. Plates. Figures. E'^'^" ''^ ^'''^^' ^'^ 



Pellows. THE Public. 



Proceedings of the Twelfth Summer 



Meeting, held at New York city June 



26,1900. H. L. FxiRCHiLD, Secretary. 1-12 $0.15 $0.30 



Pleistocene ice and river erosion in the 



Saint Croix valley of Minnesota and 



Wisconsin. Wakren Upham 13- 24 ^ 



Giants' kettles eroded by moulin torrents. [■ .30 .60 



AVarren Upham 25- 44 1 J 



(viii) 



