54 
CASE 3. — Rocks of the Saarbrucken Coal Fields of Ger- 
many. These form a typical series illustrating the rocks of a coal 
basin. 
CASE 4. — Peat and its uses. In this case are shown raw 
peat and stages in the process of making a fuel from it and of 
manufacturing it into textile fabrics and paper. 
CASE 5. — Lignites and Bituminous Coals from the Eastern 
States and Colorado. 
CASE 6. — Bituminous Coals from the Western States and 
South America. 
CASE 7. — Bituminous Coals from England. Coal from the 
Saarbrucken Coal Fields, Germany. 
CASE 8. — Bituminous Coal from the Westphalian Coal 
Fields, Germany. Series illustrating the grading and cleaning 
of coal by washing. Anthracite Coal. Cannel. 
CASE 9. — Asphalt and Cannel. 
CASE 10. — Section of coal seam five feet in thickness, from 
the Bore Hole seam, Duckenfield and Merthyr collieries, New 
South Wales. 
CASE 11. — Large blocks of anthracite and bituminous coal. 
HALL 71. 
PETROLEUM AND IT5 DERIVTIVES. 
This hall contains a very complete collection made by the 
Standard Oil Company to illustrate modes of occurrence in 
nature of the mineral oils of the United States, the methods 
used for distilling and refining them and the products obtained. 
It contains specimens of crude oil from the majority of the pools 
in the United States ; specimens of various oil-bearing sands and 
minerals of the oil strata; models of oil refineries and a complete 
series of the products of petroleum. By following the order 
given below, the visitor will find illustrated: (1), the natural 
history of petroleum; (2), its manufactured products, and (3), 
the uses or applications of these. 
CASES 1, 2, 3 AND 4. — Crude petroleum. 
The^ specimens are arranged to show gradations of color, 
this being seen to vary from black, through shades of dark 
