63 
HALL 70. 
Case lA. — A single diamond from Kim.berly, South Africa. 
Other specimens can be seen in the gem series of the section of 
Mineralogy. “Blue Ground” (matrix) of the diamond from De 
. Beers mines, Cape Colony, South Africa. 
Case IB. — Graphite and manufactured articles in which 
graphite is an important constituent. 
Case 2 A. — Anthracite coal. 
Case 2B. — Semi -anthracite coal; Semi -bituminous coal; 
Bituminous coal. 
Case 3A. — Cannel coal; Bituminous coal. 
Case 3B. — Lignite; Woody Fibre; Peat. 
Case 4r. — Crude and Refined Petroleum. 
Case 4A. — Coke — 48 and 72 hours. 
Case 4:B. — Eggette and block coal, manufactured from 
slack. 
Case 5 A. — American, German and F'rench manufactured 
pressed coal ; Coal shales. 
Case 5 B. — Coke. 
Case BA. — Liquid Bituminous coal; Petroleum shale. 
Case BB. — Asphaltum minerals. 
Case 7 . — Application of Asphaltum, 
