State Museum of Natubal History. 35 



Number. 



438 Chalcedony Mt. Lebanon, Syria. 



439 Chalcedony 



440 Chalcedony 



441 Chalcedony -. 



442 Chalcedony « 



443 Chalcedony 



Pickett Collection. 



444 Chalcedony . . - 



445 Chalcedony 



446 Chalcedony North part of Yellowstone park, Montana. 



447 Chrysoprase 



Gebhard Collection. 



448 Chrysoprase Mahren, Germany. 



449 Chrysoprase. Bound Brook, N. J. 



450 Chrysoprase Baumgarten, Germany. 



45 L Agate Ireland, 354 



Simms Collection. 



452 Agate 



453 Agate Rock of Gibraltar. 



Simms Collection. 



454 Moss agate , 



455 Agate Rio Jaguarao, Brazil. 



456 Agate 



457 Agate 



458 Agate , 



459 Agate 



460 Agate Rio Jaguarao, S. Pedro do Sul, Brazil. 32 



461 Agate Rio Jaguarao, S. Pedro do Sul. 



Brazilian Collection. 



462 Agate (Seixas rollados) Rio de S. Francisco do Norte. 33 



Brazilian Collection. 



463 Jasper Saugus, Mass. 68 



Simms Collection. 



464 Jasper 



Simms Collection. 



465 Agate Rio Jaguarao, P. de S. Pedro do Sul. 34 



Brazilian Collection. 



466 Jasper and specular iron (boulder) Grand Rapids, Mich. 



Pickett Collection. 



467 Flint 157 



Gebhard Collection. 



468 Flint in chalk England. 



Pickett Collection. 



469 Quartz (Siliceous concretions) 



470 Hornstone 



471 Hornstone 



472 Wood-opal Alexandria, Va. 



473 Wood-opal Mt. Diablo, Cal. 



Simms Collection. 



474 Silicified wood 



Pickett Collection. 



