834

APPENDIX.

1. Elled Coal, 3 feet 6 inches thick ; used at the blast-fur-naces. Structure laminar, but so frequently and minutely in-tersected in its sectional area, as to give it the appearance of arough crystallization.

Lost in coking . . . 17*13

Bituminous coal coke . . 82 - 87

- 100 parts.

Analysis:—Volatile in coking . . . 17*13

Carbon .... 81*87Bright fawn-coloured ashes . .1*

- 100 parts.

2 . Three-quarter Coal , used for coking for the refineries. Aregular reedy coal, hut obliquely intersected in its cross fracture,so as to give the appearance of a specular arrangement.

Lost in coking . . . 15*1

Fat bituminous coal coke . .84-9

- 100 parts.

Analysis :—Volatile in coking . . . 15-10

Carbon .... 82-65Greyish-white ashes. . . 2-25

- 100 parts.

3. Droydeg vein of Coal , used in the forges and mills. Reedy,but running obliquely to the planes so as to present a twisted

structure.

Lost in cokingDense bituminous coke

Analysis:—Volatile in coking .Carbon

Light-coloured pink ash

17-86

82-14

- 100 parts.

17-86

77-14

5*

- 100 parts.

4. Nantyglo Old Coal ; blast-furnace coal , 5 feet 6 inches inthickness. An imperfeet reedy coal, running also obliquely tothe planes ; presenting a sectional fracture entirely granular.

Lost in coking . . . 18*75

Compact bituminous coal coke , 81*25

- 100 parts.

Analysis:—Volatile in coking . . . 18-75

Carbon .... 78'75

Ashes, greyish-white-colour. . 2-50

-- 100 parts.

Examination and analyses of eight specimens of the coals usedat the Sir Howy Iron Works.