PUBLICATIONS XV11 



PUBLICATIONS OF THE GEOLOGICAL SOCIETY OF AMERICA 



Regular Publications 



The Society issues annually , in four quarterly parts, a single serial octavo 

 publication entitled Bulletin of the Geological Society of America, the edi- 

 tion being 750 copies. A small supply of authors' separates of the longer arti- 

 cles is kept for sale by the Secretary at the prices quoted in each volume. 



The Bulletin is sold at the uniform price of ten dollars ($10.00) per vol- 

 ume, with a discount of twenty-five (25) per cent to Fellows of the Society. 

 A discount of ten (10) per cent is allowed to persons residing elsewhere than 

 in North America and public and institutional libraries; carriage extra. Sub- 

 scriptions are payable in advance. Regular subscribers within the United 

 States of America and its possessions receive their parts, postage paid, as 

 issued. Forty (40) cents per volume must be added to the subscription price 

 to cover postage to other countries in the Postal Union. 



The price of the index to volumes 1-10 is $2.25 ; to volumes 11-20, $3.50, and 

 to volumes 21-30, $4.00 ; carriage extra. No reduction is made to dealers. 

 Orders should be addressed to the Secretary, whose address is care of the 

 American Museum of Natural History, New York, N. Y., and drafts and money 

 orders should be made payable to The Geological Society of America. 



Description of tin-: Published Volumes 



Volumes. Pages. 



Vol. 1, 1S89 598 + xii 



Vol. 2, 1890 022 4- xiv 



Vol. 3, 1891 541 4- xi 



Vol. 4. 1892 458 4- xi 



Vol. 5, 1893 655 + xii 



Vol. 6, 1894 528 + x 



Vol. 7. 1S95 558 + x 



Vol. 8, 1896 446 4- x 



Vol. 9, 1897 460 + x 



Vol. 10, 1898 534 + xii 



Index to volumes 1-10 209 



Vol. 11, 1899 651 4- xii 



Vol. 12, 1900 538 4- xii 



Vol. 18. 1901 583 + xii 



Vol. 14, 1902 609 + xii 



Vol. 15, 1903 636 4- x 



Vol. 16, 1904 636 + xii 



Vol. 17, 1905 785 + xiv 



Vol. 18, 1906 717 + xii 



Vol. 19. 1907 617 + x 



Vol. 20, 1908 749 + xiv 



Index to volumes 11-20 422 



Vol. 21. 1909 S23 + xvi 



Vol. 22, 1910 747 4- xii 



Vol. 23. 1911 758 + xvi 



Vol. 24, 1912 737 4- xviii 



Vol. 25, 1913 802 4- xviii 



Vol. 26. 1914 504 + xxi 



Vol. 27. 1915 739 + xviii 



Vol. 28, 1916 1005 + xxii 



Vol. 29, 1917 679 -f xix 



Vol. 80, 1918 644 + xiii 



Index to volumes 21-30 825 



Vol. 31, 1919 450 + xviii 



Vol. 82. 1920 488 + xviii 



Vol. 38. 1921 862 4- xxi 



l.ATKS. 



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