Heat, age of the sun’s, [37]

Helmholtz on age of sun’s heat, [35]

Huggins, Mr., and Dr. Miller on spectra of nebulæ with one nitrogen line, [84]

Hull, Prof., on denudation of Pendle Range, [60]

„ on examples of enormous faults, [54]

Humphreys and Abbot on sediment of the Mississippi, [40]

Hunt, Dr. T., on the pre-nebular condition of matter, [85]

„ on universal atmosphere, [86]

Huxley, Prof., on geological time, [65], [66]

Hypothesis, value of, [70]