Literatur.

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Obscrvagoös para servirem para a historia geologica das ilhas da Madeira, PortoSanto e Desertas, por Luiz da Silva Monsinho d’Albnqnerqne. Memorias da AcademiaR. das sciencias de Lisboa. Tomo XII Parte I. 1837.

United States Exploring Expedition, vol. X. Geology by J. D. Dana . Chap. XII.Geological Observations on tbe Island of Madeira — 1838.

On the Geology of Madeira, by James Smith, Esqn. Proceedings of the GeologicalSociety . Vol. III. p. 351. 1840 — 41.

Notes 'on the Physical Geograpby, Geology and Climate of the Island of Madeira,by Dr. J. Macaulay. Edinburgh New . Phil. Journ. vol. XXIX. p. 350.

Sketch of Madeira, by E. V. Harconrt, Esqn. London , 1851. Chap. YI. on Geology,by the Rev. W. V. Harcourt.

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Madeira, its Climate and Scenery, a Hand-book for invalid and other visitors, byRobert White. Second Edition, edited, and in great part re-written, with the additionof much new matter, by James Yate Johnson. Edinburgh . Ad. and Ch. Black, 1857.Chap. XVIII. Geology.