482 SCIENCE PROGRESS. 



(10) PlRSSON, L. V. On some Phonolitic Rocks from Montana. 



Amer. Jour. Sci. (3), vol. 1., pp. 394-399, 1895. 

 Weed, Walter Harvey. Phonolitic Rocks from Montana. 

 Ibid., pp. 506, 507. 



(11) Weed, Walter H. and Pirsson, Louis V. Highwood 



Mountains of Montana. Bull. Geol. Soc. Amer., vol. vi., pp. 

 389-422, 1895. 

 Lindgren, W. A Sodalite-Syenite and other Rocks from 

 Montana. Amer. Journ. Sci. (3), vol. xlv., pp. 286-297, 1893. 



(12) Weed, W. H. and PlRSSON, L. V. Igneous Rocks of Yogo 



Peak, Montana. Amer. Journ. Sci. (3), vol. 1., pp. 467-479, 



1895. 



(13) Merrill, George P. Notes on some Eruptive Rocks from 



Gallatin, Jefferson, and Madison Counties, Montana. Proc. 

 U.S. Nat. Mus., vol. xvii., pp. 6^7-67^, 1895. Review by 

 Iddings. Journ. of Geol., vol. hi., pp. 850, 851, 1895. 



(14) IDDINGS, JOSEPH P. Absarokite-Shoshonite-Banakite Series. 



Journ. of Geol., vol. hi., pp. 935-959, 1895. 



(15) Osann,A. Melilite-Nepheline-Rasalt and Nepheline-Basanite 



from Southern Texas. Ibid., vol. i., pp. 341-346, 1893. 



(16) OSANN, A. Beitrage zur Geologie und Petrographie der 



Apache (Davis) Mountains, West Texas. Tscherm. Min. u. 

 Petr. Mitth., vol. xv., pp. 394-456, 1886. 



(17) Adams, Frank D. On the occurrence of a large area of 



Nepheline Syenite in the Township of Dungannon, Ontario. 

 Amer. Journ. Sci. (3), vol. xlviii., pp. 10-16, 1894. 



(18) HARRINGTON, B. J. On Nepheline, Sodalite and Orthoclase 



from the Nepheline Syenite of Dungannon, Hastings County, 

 Ontario. Ibid., pp. 16-18. 

 Adams, Frank D., and Harrington, B. J. On a New 

 Alkali Hornblende and a Titaniferous Andradite from the 

 Nepheline-Syenite of Dungannon, Hastings County, Ontario. 

 Ibid. (4), vol. i., 210-218, 1896. 



(19) Merrill, George P. On some Basic Eruptive Rocks in 



the vicinity of Lewiston and Auburn, Androscoggin County, 

 Maine. Amer. Geol., vol. x., pp. 49-55, 1892. 



(20) Kemp, J. F. The Elaeolite Syenite near Beemerville, Sussex 



County, New Jersey. Trans. N. Y. Acad. Sci., vol. xi., pp. 

 60-72, 1892. 



(21) Kemp, James Furman, and Marsters, Vernon Freeman. 



The Trap Dikes of the Lake Champlain region. Bull. No. 

 107 of U.S. Geol. Surv., 1893. 



(22) Marsters, Vernon F. Camptonite Dykes near Danby- 



borough, Vt. Amer. Geol., vol. xv., pp. 368-371, 1895. 



