=TYNDALL, J., Forms of Water in Clouds and Rivers, Ice and Glaciers.= With 25 Illustrations. Tenth Edition. Crown 8vo, 5_s._ (_I. S. S._) =WRIGHT, G. F., The Ice Age in North America, and its Bearing upon the Antiquity of Man.= With Maps and Illustrations. 8vo, 21_s._ MATHEMATICS. =CLIFFORD, W. KINGDON, Common Sense of the Exact Sciences.= Second Edition. With 100 Figures. Crown 8vo, 5_s._ (_I. S. S._) =KLEIN, FELIX, Lectures on the Ikosahedron, and the Solution of Equations of the Fifth Degree.= Translated by G. G. MORRICE. 8vo, 10_s._ 6_d._ PHYSICS. =BABBITT, E. D., The Principles of Light and Colour.= With over 200 Engravings and 4 Coloured Plates. Royal 8vo, 21_s._ net. =Electricity in Daily Life.= A Popular Account of its Application to Everyday Uses. With 125 Illustrations. Square 8vo, 9_s._ =GLAZEBROOK, R. T., Laws and Properties of Matter.= Crown 8vo, 2_s._ 6_d._ (_Modern Science Series._) =HOSPITALIER, E., The Modern Applications of Electricity.= Translated and Enlarged by JULIUS MAIER. Second Edition, revised, with many Additions and Numerous Illustrations. 2 vols. 8vo, 25_s._ =LE CONTE, JOSEPH, Sight.= An Exposition of the Principles of Monocular and Binocular Vision. Second Edition. With 132 Illustrations. Crown 8vo, 5_s._ (_I. S. S._) =LOMMEL, Dr. EUGENE, Nature of Light.= With a General Account of Physical Optics. With 188 Illustrations and a Table of Spectra in Chromo-lithography. Fifth Edition. Crown 8vo, 5_s._ (_I. S. S._) =ROOD, OGDEN N., Colour.= A Text-Book of Modern Chromatics. With Applications to Art and Industry. With 130 Original Illustrations. Third Edition. Crown 8vo, 5_s._ (_I. S. S._) =STALLO, J. B., Concepts and Theories of Modern Physics.= Third Edition. Crown 8vo, 5_s._ (_I. S. S._) =STEWART, BALFOUR, Conservation of Energy.= With 14 Illustrations. Seventh Edition. Crown 8vo, 5_s._ (_I. S. S._) =WURTZ, Prof., The Atomic Theory.= Translated by E. CLEMINSHAW. Fifth Edition. Crown 8vo, 5_s._ (_I. S. S._) ZOOLOGY. =BENEDEN, J. P., van, Animal Parasites and Messmates.= With 83 Illustrations. Fourth Edition. Crown 8vo, 5_s._ (_I. S. S._) =BERNSTEIN, Prof., The Five Senses of Man.= With 91 Illustrations. Fifth Edition. Crown 8vo, 5_s._ (_I. S. S._) =COMSTOCK, JOHN HENRY and ANNA B., A Manual for the Study of Insects.= Royal 8vo, 25_s._ net. =FLOWER, W. H., The Horse: A Study in Natural History.= Crown 8vo, 2_s._ 6_d._ (_Modern Science Series._) =HARTMANN, R., Anthropoid Apes.= With 63 Illustrations. Second Edition. Crown 8vo, 5_s._ (_I. S. S._) =HEILPRIN, Prof. A., Geographical and Geological Distribution of Animals.= With Frontispiece. Crown 8vo, 5_s._ (_I. S. S._) =HORNADAY, W. T., Taxidermy and Zoological Collecting.= With Chapters on Collecting and Preserving Insects, by W. J. HOLLAND, D.D. With 24 Plates and 85 Illustrations. 8vo, 10_s._ 6_d._