748 SKC. 17. MINERALOGY, CRYSTALLOGRAPHY, ETC. 



3463. Collection of Sections of Crystals, for exhibiting 

 in the Polariscope. Dr. Stone. 



3464. Specimens of Minerals prepared for Observa- 

 tion. 



Case containing minerals and chemical products. 

 Case containing specimen of micrographic rock. 

 Four cubes of different chroites crystals. 

 Rhomboid in Iceland spar. 

 Section of a diorite. 



M. Werlein, Paris. 



3465. Collections of Crystals and Minerals. 



B. Stiirtz, Bonn. 



346 5a. Collection of Crystals. 



M. Lutz, Paris. 



3466. A collection of 200 separate Crystals, for 



inineralogieal and crystallographieal study ; their faces have been 

 crystallographically determined ; the system of crystallography 

 used is that of Naumann. Bernh. Stiirtz, Bonn. 



3467. Specimens from Mitscherlich's collection of Artificial 

 Minerals, Felspar, Magnetic Iron Ore, &c. 



Prof. A. Mitscherlich, Miinden^ Hanover. 



3468. Specimens of Mica containing tourmalin, garnet, and 

 quartz. Max. Raphael, Breslau. 



3469. Collection of Plates of Crystals, Selenite, and Mica 



combinations, Dichroiscope. cubes and plates for showing 

 dichroism ; about 180 pieces in mahogany case. 



Wilhelm Steeg, Hamburg. 



In the collection of plates of crystals are a large number of beautiful, rare, 

 and valuable minerals and chemical preparations, which in part show, besides 

 polarisation figures, also dichroism, atterism, fluorescence, &c. Also prepara- 

 tions exhibiting interesting twin growths in closed crystals, and crystals 

 containing liquids in cavities. 



3469a. Russian Minerals taken from the educational col- 

 lection in the Mining School in St. Petersburg. 4.17 specimens, 

 value, 180/. Mining School in St. Petersburg. 



1, 2. Gold.] Zmeinogorsk, Altai. 



3. Silver. Zmeinogorsk, Altai. 



4. Salair, Altai. 



5. Nikolai evsk, Altai. 



6. Urjum, Siberia. 



7. 8, 9. Copper. Nishni-Turunsk, 

 Ural. 



9a. Platinum. Nishni-Tagilsk, 



Ural. 



96. Iridosmine (Newjanskite). Zla- 

 toust, Ural. 



10, 11. Meteoric iron (Pallassite). 

 Krasnoiarsk, Siberia. 



11 bis. Tin. Yenisseisk, Siberia. 



12. Aerolite. Pultusk, Sedletz. 



13. Native sulphur. Kazan. 



14. 15. Graphite. Serdobol, Fin- 

 land. 



