„ Sir W. Thomson on, [12]
Mill, Mr. J. S., on hypothesis, [70]
Miller, Dr., and Mr. Huggins on spectra of nebulæ with one nitrogen line, [84]
Mills, Dr., on Polymerisation, [95]
Morris, Mr. Charles, on the pre-nebular condition of matter, [75]
Nebulæ, broken fragments in a gaseous mass, [19]
„ cometic, [22]
„ condensation insufficient to account for heat of, [27]
Nebulæ condensation, last condition of, [30]
„ first condition of, [19]