6 Bulletin 7 62 



McFarlane's Geol. Ry. Guide. — McFarlane's Geological Railroad 

 Guide. 



Mem. Amer. Acad. Arts and Sci. — Memoirs of the American 

 Academy of Arts and Sciences. 



Min. Res. U. S. — Mineral Resources of the United States. 



Min. Jour. — Mining Journal of London. 



Mon. U. S Geol. Surv. — Monograph of the United States Geo- 

 logical Survey. 



Pop. Sci. Mon. — The Popular Science Monthly. 



Proc. Amer. Phil. Soc. — Proceedings of the American Philosoph- 

 ical Society, Philadelphia. 



Proc. Amer. Assoc. Adv. Sci., or A. A. A. S. — Proceedings of 

 the American Association for the Advancement of Science. 



Proc. Amer. Acad. Arts and Sci. —Proceedings of the American 

 Academy of Arts and Sciences, Boston, Mass. 



Proc. Acad. Nat. Sci. Phila. — Proceedings of the Academy of 

 Natural Sciences, Philadelphia. 



Proc. Boston Soc. Nat. Hist. — Proceedings of the Boston Socie- 

 ty of Natural Hi.story. 



Proc. U. S. Nat. Mus. — Proceedings of the United States Nat- 

 ional Museum. 



Quart. Jour. Geol. Soc, or Q. J. G. S. — Quarterly Journal of the 

 Geological Society, London. 



Sci. — Science. 



Trans. Amer. Geol. Soc. — Transactions of the American Geolog- 

 ical Society. 



Trans. Amer. In.st. Min. Engrs. — Transacftions of the American 

 Institute of Mining Engineers. 



Trans. Amer. Phil. Soc. — Transadlions of the American Philo- 

 sophical Society. 



Trans. Acad. Sci. N. Y. — Transacflions of the Academy of Sci- 

 ences of New York. 



Trans. Assoc. Amer. Geol. and Nat. — Transadlions of the Asso- 

 ciation of American Geologists and Naturalists. 



Trans. Geol. Soc. Pa. — Transacflions of the Geological Society 

 of Pennsylvania. 



Trans. Geol. Soc. London. — Transactions of the Geological So- 

 ciety of London. 



Trans. Geol. Soc. Manches. — Transacftions of the Geological So- 

 ciety of Manchester. 



Trans. Wag. Free Inst. Sci. — Transacftions of the Wagner Free 

 Institute of Science, Philadelphia. 



