XXII. The Theory of Sound in its Relation to Music. By Professor Pietro Blaserna, of the Royal University of Rome. With numerous Illustrations. Second Edition. Crown 8vo. Cloth, price 5s.
XXIII. Studies in Spectrum Analysis. By J. Norman Lockyer. F.R.S. With six photographic Illustrations of Spectra, and numerous engravings on wood. Crown 8vo. Cloth, price 6s. 6d.
Forthcoming Volumes.
Prof. W. Kingdon Clifford, M.A. The First Principles of the Exact Sciences explained to the Non-mathematical.
W. B. Carpenter, LL.D., F.R.S. The Physical Geography of the Sea.
Sir John Lubbock, Bart., F.R.S. On Ants and Bees.
Prof. W. T. Thiselton Dyer, B.A., B.Sc. Form and Habit in Flowering Plants.
Prof. Michael Foster, M.D. Protoplasm and the Cell Theory.
H. Charlton Bastian, M.D., F.R.S. The Brain as an Organ of Mind.
Prof. A. C. Ramsay, LL.D., F.R.S. Earth Sculpture: Hills, Valleys, Mountains, Plains, Rivers, Lakes; how they were Produced, and how they have been Destroyed.