Anthracite of the Calton Hill. 335 
According to the different results obtained, the composition 
of the anthracite of the Calton Hill is :— 
Carbon =ONezc 
Hydrogen = 2:91 
Nitrogen = 0°59 
Oxygen = 1:26 
Sulphur = 2°96 
Ash = 1:05 
100-00 
For comparison with this analysis, I subjoin a few analyses 
of anthracite from different localities. 
= ® 
actaliiatisisd tien ftoud adished 
3 es 5 z < 
From Lamure, Isére Depart- 
ment, according to Jacque- , : ; , i 
lin (Annal. de Chimie et ( {5977 | 1°67 | 363 | 036 | 457 
de Phys. lxxiy., 200), 
From Sablé, Sarthe Depart- 87-22 | 2-49 | 1-08 | 231 | 6-90 
ment, 
From Vizille, eons, Depart- 94-09 | 1-85 Py 2:85 | 1-90 
ment, 
ah, another locality i in Tees 94:00 | 1-49 hes 0-58 | 4-00 
epartment, 
Anthracite from Pembroke- 
shire, according to Schaf- 
hautl, Lond. & Edin. Phil. 
Mag. xvii., 215, 
From Coalbrook in Carmar- 90°58 | 3-60 | 3:81 | 0-29 | 1-72 
thenshire, 
Anthracite from Wales, . 91°44 | 3°46 | 2°58 | 0-21 | 1°52 
94°100, 2:390 | 1°336| 0°874/) 1°300 
eee es FFs — 
Sulphur, 
0-79 
The last analysis is taken from Sir Henry de la Beche and 
Dr L. Playfair’s Coal Report, the others from Hausmann’s 
Mineralogy. 
The most remarkable peculiarity of the anthracite of the 
Oalton Hill is the comparatively large quantity of sulphur 
which it contains. By far the greater portion of this sul- 
