BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Irregular Publications 



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

 cations issued wholly or in part under its auspices. Each author of a Memoir 

 receives 30 copies without cost, and is authorized to order any additional number 

 at a slight advance on cost of paper and presswork ; and these separate brochures 

 are identical with those of the editions issued and distributed by the Society. 

 Contributors to the proceedings are also authorized to order any number of separate 

 copies of their papers at a slight advance on cost of paper and presswork ; but such 

 separates are bibliographically distinct from the brochures issued by the Society. 



The following separates of parts of volume 12 have been issued : 



Editions uniform with the Brochures of the Society 



Pages 



13- 24, 





30 



copies. 



Novembe 



r30 



1900. 



25- 44, 



plate 1 ; 



30 



( ( 



December 



c, 



1900. 



45- 56, 



plates 2- 5 ; 



200 



(( 



(( 



21, 



1900. 



57- 92, 





330 



( ( 



February 



25, 



1901. 



93-108, 



plates 6-11; 



80 



(( 



(( 



26, 



1901. 



109-128, 



plate 12 ; 



30 



(( 



(( 



28, 



1901. 



129-146, 





30 



1 1 



March 



25, 



1901. 



147-164, 





100 



i I 



April 



13, 



1901. 



165-172, 



plates 13-18 ;' 



305 



ti 



u 



16, 



1901. 



173-196, 



plate 19 ; 



30 



(( 



(( 



18, 



1901. 



197-216, 





55 



<( 



(( 



30, 



1901. 



217-270, 



plates 20-25 ; 



100 



(( 



(( 



30, 



1901. 



271-300, 





80 



u 



June 



17, 



1901. 



301-312, 



plate 26 ; 



130 



(( 



August 



16, 



1901. 



313-342, 



plates 27-28 ; 



230 



<< 



(( 



31, 



1901. 



343-376, 



plates 29-32 ; 



230 



11 



(( 



31, 



1901. 



377-394, 



plates 33-34 ; 



230 



(( 



Septembei 



• 4, 



1901. 



395-444, 



plates 35-41 ; 



130 



(< 



October 



31, 



1901. 



Special Editions* 



Pages 2- 4,t 



30 ( 



copies. 



4- 9, 



150 





9- 10, 



80 





" 10- 11, 



30 





Page 11, 



30 





Pages 447-453, 



30 





" 454-455, 



30 





" 455-461, plates 42-43; 



30 





Page 461, 



30 





462, 



30 





November 30, 1900. 



30, 1900. 



30, 1900. 



30, 1900. 

 ♦' 30, 1900. 



27, 1901. 

 " . 27, 1901. 



27, 1901. 



27, 1901. 



27, 1901. 



* Bearing the imprint [From Bull. Geol. Soc. Am., Vol. 12, 1900]. 

 t Fractional pages are sometimes included. 



