1.
XLIX. On the mineral structure of the south of Ireland, with correlative matter on Devon and Cornwall, Belgium, the Eifel, &c
2.
3.
LXX. On the mineral structure of the South of Ireland, with correlative matter on Devon and Cornwall, Belgium, the Eifel, &c.
LIX. On the mineral structure of the south of Ireland, with correlative matter on Devon and Cornwall, Belgium, the Eifel