THE
QUARTERLY JOURNAL
OF
THE GEOLOGICAL SOCIETY OF LONDON.
PROCEEDINGS
OF
THE GEOLOGICAL SOCIETY.
December 22, 1869.
John Hopkinson, Esq., of 8 Lawn Road, Haverstock Hill, N.; Samuel John Sanders, Esq., M.A., Vice-Master of the Beds. Middle-Class Public School; and Jabez Church, Esq., C.E., of 17 b Great George Street, Westminster, S.W., and Chelmsford, Essex, were elected Fellows of the Society.
The following communications were read:—
Contents.
I. Introduction.
II. Petrology of the Iron-ores and associated Rocks.
1. Section on Slievananee.
2. Section at Belumford.
3. Enumeration of Localities.
4. Deductions from the several Sections.
III. Origin of the Pisolitic Iron-ore.
(1) Sedimentary Theory.(2) Theory of deposition.(3) Igneous Theory.(4) Metamorphic Theory.
2. Origin of Bole and Lithomarge.
3. Absence of Boles above the horizon of the Iron-ore.
4. Metamorphism of Bole.
5. Analyses of Pisolitic ores.
IV. Nature and origin of the Ferruginous series at Ballypalidy.
1. Section at Ballypalidy.
2. Relation of the strata to the basalts.
3. Origin of the Iron-ore.
4. Plant-remains of the series.
V. Economics and Mineral Statistics.
VI. General conclusions.
The recent development of a new branch of mining industry in the north of Ireland has given us ample facilities for ascertaining the
