46 



Series D. 12 slides of typical sedimentary and metamorphic 

 rocks, cloth case. 



1. Sandstone. 7. Chiastolite-slate. 



2. Chalk. 8. Gneiss. 



3. Oolitic limestone. 9. Mica-schist, with garnets. 



4. Crystalline limestone. 10. Hornblende-schist. 



5. Clay-slate. 11. Chlorite -schist. 



6. Whet-slate. 12. Quartzite. 



Series E. 36 typical rock 'sections, in polished box. 



1. Muscovite-granite. 19. Porphyrite. 



2. Hornblende-granite. 20. Nepheline-phonolite. 



3. Graphic granite. 21. Nosean-phonolite. 



4. Luxullianite. 22. Leucite-phonolite. 



5. Quartz-felsite. 23. Gabbro. 



6. Banded rhyolite. 24. Diabase. 



7. Obsidian. 25. Basalt. 



8. Pumice. 26. Ophitic basalt. 



9. Pitchstone. 27. Leucite -basalt. 



10. Perlitic pitchstone. 28. Picrite. 



11. Spherulitic felsite. 29. Limestone, with fora- 



12. Syenite. minifera. 



13. Trachyte. 30. Oolitic limestone. 



14. Hornblende-mica-diorite. 31. Clay slate. 



.15. Granulitic hypersthene- 32. Chiastolite-slate. 



diorite. 33. Mica-schist with garnets. 



.16. Quartz-diorite. 34. Chlorite-schist. 



17. Hornblende- Andesite. 35. Gneiss. 



18. Augete- Andesite. 36. Quartzite. 



Boxes of slides, similar to the above, which are pre- 

 pared by R. Chapman, can be obtained from J. R. 

 Gregory, 88, Charlotte Street, Fitzroy Square, "W., at the 

 following prices : Series A., 6s. 6d. ; Series B., 12s. 6d. ; 

 Series C. and D., each, 18s. ; Series E., 21. 12s. 6d. 



VI. PLASTER CASTS OF FOSSILS. 



141. Casts of fossils in 11 frames, glazed. 



E. 33 to 64. 1888. Made by B. St&rtz, Bonn. 



The following are the subjects : 



1. Cast, 32 in. by 18 in. Pentacrinus subangularis. Miller, 

 from the Lias of Holzmaden. The original in the Philadelphia 

 Academy of Sciences 



2. Eight fossils. Taxocrinus Sturtzii, Follm., U. Devonian, 

 Bundenbach ; Godiacrinus Schultzii, Follm., U. Devonian Gem- 

 linden ; Poteriocrinus Zeceformis, Follm., U. Devonian Ge,miia- 



