EXPLANATION OF THE PLATES. 
Plate 11. 
* . 
A Map, in illustration of the geology of Croghan Kinshela mountain, and of the 
works w hich were carried on there, under the auspices of Government. 
Plate 12. 
Plan and Sections of the Copper Mines in Cronebane and Tigrony, in eluci- 
dation of the metalliferous relations of that district. 
Plate 13 contains, 
Views copied from nature. 
Fig. 1. 2 3. So 4. Beds and veins of granite in mica slate. 
Fig. 5. Fragments of mica-slate in a metalliferous vein. 
Fig. 6. & 7. Horizontal plan of contemporaneous veins in transition, grey \vack6. 
Fig. 8. Vertical section of contemporaneous veins in the same rock. 
Fig. 9. & 10. Pebbles of limestone in transition grevwacke slate. 
Fig. 11, & 12. Veins of breccia, traversing flcetz limestone and slate-clay. 
Plate 14 contains, 
sections. 
No. 1. Through the Castlecomer coal district* from the Nore on the west to 
the Barrow on the east. 
No. 2. From the Barrow on the west to the summit of Lugnaquilla on the east. 
No. 3. From the summit of Lugnaquilla on the west, to the sea at Arklow on 
the east. 
In the last two sections, mountains are in some cases projected on 
the line of section, which stand not immediately in the line. 
No. 4. Through the Killenaule coal district. 
Plate 15. 
Map of the Tract. 
■"PLATE 16. 
In illustration of Mr. W. Phillips’s paper. 
Primitive Crystal of the Sulphate of Barytes and its modifications. 
