— changes in iron ore by trap dikes, in Nova Scotia, xv, 212.
— — by artificial heat in a sandstone, E. Emmons, xlv, 146.
— — by heat, through the medium of heated water, J. D. Dana, xlv. 104.
— —, by dikes, J. D. Dana, xlv, 113.
— origin of granite, R. H. Bonnycastle, xxx, 245.
— granite, J. D. Dana, xlv, 108.
— limestone, Carrara marble an instance of, xxx, 176.
— limestones, Maine, C. T. Jackson, xxxvi, 146.
— rocks of N. Hampshire, notice of, C. T. Jackson, xlv, 145.
Metamorphism, related to pseudomorphism, xlviii, 92.