1880. J NATURAL SCIENCES OF PHILADELPHIA. 247 



Lepidomelane. 



Arendal, Norway. Black; uniaxial. 

 Frankford, Phila. Black; uniaxial. 



Muscomte. 



1. Brunswick, Me. Briglit green scales. (A. N. S.) 



2. Pennsbury, Pa. (A. N. S.) 



3. Yesuvius. With adularia. (A. N. S.) 



4. Button's Mills, Del. Co., Pa, (J. M. Cardeza.) 



5. St. Lawrence Co., N. Y. Greenish-white, plu- 



mose radiated crystals, showing Airy's spirals. 

 (A. N. S.) 



6. Darby, Phila., Pa. Small scales in gneiss. 



7. Siberia. (A. N. S.) 



8. Germantown, Phila. Smokj- brown, clear crystals. 



9. Plainfield, Conn, Margarodite. Contains 5 p. c. 



of water. 



10. Poorhouse, Del. Co., Pa. 



11. Germantown, Pa. 



12. Germantown, Pa. Containing enclosed crystals 



of a black, uniaxial mica. 64°30'. 



13. Frankford, Pa. In hornblende rock : in calcite, 



Avith fluorite and epidote. (T. D. Rand). 64°50'. 



14. Falls of Schuylkill, Phila. In hornblende rock. " 65°. 



15. Cumberland, England. "Nacrite." (A. N. S.) 65°. 



16. Goyaz, Brazil. (A. N. S.) 65°50'. 



17. Brandywine Hundred, Del. Containing mag- 



netite markings. 65°-67°30'. 



After heating until it whitens, it has an 

 angle of 49°. 



18. Litchfield, Me. (A. N. S.) 



19. Portland, Conn. 



20. Southern Colorado. Identical with mica of 



Pennsbur}', Pa., and Brandywine Hundred, 

 Del., having magnetite markings, 



21. Grafton, N. H. 



22. Chandler's Hollow, Del. (J. M. Cardeza.) 



23. Black Hills, Wyoming. (A. N. S.) 



24. Zinnwald, Bohemia. (A. N. S.) 



25. Buncombe Co., N. C. (A. N. S.) 



