a'' 



357 

 358 



359 

 361 



AZ UMINA GR UP— Continued. 



Wavellite — continued. 



Hemispherical concretions. 

 Loc, Barnstaple. 



Do. Greenish mammilations. 

 Loc, Ireland (?) 



Do. Small dark-colored radiations. 

 Loc, Bohemia (?) 



Do. Greyish-green and radiated, on dark slate. 

 Loc.^ Barnstaple. 



Do. Light-grey radiations. 

 Loc, Barnstaple. 



;62 Do. Bright-green radiations. 



■^(iTy ■ Do. Very thin ash-grey radiations. 



364 Do. Light-grey concretions. 

 Loc, Stenna Gwynn. 

 Obs., Presented by Mr. J. H. Collins. 



365 Do. In radiated stalactitic groups. 

 Loc, West Chester, Pennsylvania. 

 Obs., Presented by Mr. Tailing. 



353 Cryolite. — Massive. 

 Loc, Greenland. 



354 Do. Massive, with Chalybite, Galena, and Quartz. 

 Loc, Greenland. 

 Obs.., Presented by Mr. R. Pearce. 



366 Alum.— Compact mass. 



Class IV.-EARTHS. 



SILICA GROUP. 



371 Quartz, (a. Rock Crystal.) — Fine transparent crystal. 

 Loc, Delabole. 



372 Do. Flat double-pointed crystal, shewing iridescence. 

 Loc.^ Brazil. 



