50 Thirty-eighth Ajotual Report op the 



dumber. 



970 Crocoite 



Van Rensselaer Collection. 



971 Crocoite 



Van Rensselaer Collection. 



972 Crocoite 



Van Rensselaer Collection. 



973 Crocoite 



Van Rensselaer Collection. 



974 Crocoite 



G-ebhard Collection. 

 9 To Crocoite (chromate of lead) Goyabira, P. de Minas. 



Brazilian Collection. 

 976 Gypsum Grand Rapids, Mich. 



From C. K. Williams, Vermont. 

 9?? Gypsum (fibrous) Ega, P. d'Amazona. 



Brazilian Collection. 



978 Gvpsum 



979 Gypsum 



980 Gypsum . . 



981 Gypsum Grand Rapids, Mich. 



From J. Ball, Kent county. 



982 Gypsum (fibrous) , 



Van Rensselaer Collection. 



983 Gypsum (fibrous) 



Van Rensselaer Collection. 



984 Gypsum 



985 Gypsum 



986 Gypsum Scottsville, Monroe Co., X, Y. 



Pickett Collection. 



987 Gypsum Grand Rapid's, Mich. 



Pickett Collection. 



988 Gypsum - 



989 Gypsum Lockport, Niagara Co., X. Y. 



990 Gypsum - . Grand Rapids, Mich. 



Pickett Collection. 



991 Gypsum 



Van Rensselaer Collection. 



992 Gypsum Grand Rapids. 



993 Gypsum Paris, France. 



994 Gypsum Grand Rapids, Mich. 



995 Gypsum Paris, France. 



996 Gypsum Grand Rapids. 



997 Gypsum (fibrous) D* Alcantara, P. Maranhao. 



Brazilian Collection. 



998 Gypsum Lockport, Niagara Co., X Y. 



Pickett Collection. 



999 Gypsum (fibrous) 



Van Rensselaer Collection. 



1000 Gvpsum Alabaster Bay, Mich. 



1001 Alum 



1002 Gvpsum ? 



