APPENDIX.

821

1 • Powell’s coal. Cubical structure; reedy; free from sul-phur and spar; compact.

Lost in coking . . . 27"92

Coke of bituminous coal obtained . 72 - 08

- 100 parts.

Analysis:—Volatile in coking . . . 27 92

Carbon .... 66‘58Ashes of a deep red colour . . 5'50

- 100 parts.

Coke not perfectly fused, but may still be considered the re-sult of a bituminous coal.

2. Morrison’s coal. Structure more decidedly cubical; lesscompact surface, with thin plates of iron pyrites.

Lost in coking . . . 36’92

Bituminous coal coke . . 73-08

- 100 parts.

Analysis :—Volatile in coking . . . 36-92

Carbon .... 68-58Ashes, of a deep red colour . . 4-50

-. 100 parts.

3. Penner Vein (Hanson.) Broad, reedy, bituminous coal,with lines crossing the cleavage nearly at right angles; slightly

granular.

Lost in coking . . .33

Bituminous coke obtained . . 67

— 100 parts.

Analysis :—Volatile in coking . . . 33"

Carbon .... 60-25

Red ashes .... 6'75

- 100 parts.

4- Cwm Dows (Morrison.) Thickness, 3 feet 4 inches; cu-bical ; rather friable; mixed with thin plates of iron pyrites ;granular.

Lost in coking

. 27-14

Bituminous coke obtained .

. 72-86

- 100 parts.

Analysis-Volatile in coking .

. 27-14

Carbon .

. 68-86

Red ashes . . .

. 4-

- 100 parts.

Prothero’s coal, 4 feet thick.

Cubical structure; hard,

compact texture ; reedy ; occasionally presenting thin scales ofiron pyrites.

Lost in coking

. 33-3

Bituminous coke obtained .

. 66-7

- 100 parts.