^{page 226 note 1} Report on the Petrology of St. Paul's Rocks, by M. Renard (Challenger Reports). Récifs de St. Paul, par M. Renard, Annales de la Société belge de Microscopie.

^{page 226 note 2} Oceans and Continents, Geol. Mag. Sept. 1880, p. 385, and Oceanic Islands, Feb. 1881, p. 75.

^{page 226 note 3} Origin of Continents, Geol. Mag. Decade II. Vol. X. June, 1883.

^{page 227 note 1} It seems hardly necessary to give additional evidence of the distinctness of these two pyroxenes. I may mention, however, that I have recently mounted a specimen of the monoclinic mineral, so that I can rotate it round the c-axis under the microscope. It is green in colour, and does not show a trace of pleochroism in any position.

^{page 228 note 1} Tripke recognized intergrowths of enstatite and diallage in the olivine inclusions in basalt. Orthopinacoidal lamellæ of diallage are in this case arranged parallel to the macropinacoid of the enstatite. Naumaun-Zirkel, Elemente der Mineralogie, 1881, p. 598.

^{page 230 note 1} Bořickỳ, , Elemente einer neuen chemisch-mikroskopischen Mineral und Gesteinsanalyse. Prag, 1877.Google Scholar

^{page 230 note 2} Behrens, , Mikrochemische Methoden zur Mineralanalyse. Neues Jahrbuch; Ref. Band II. 1882.Google Scholar