THE CHEMISTRY OF THE SECONDARY BATTERIES OF PLANTE AND FAURE. By J. H. GLADSTONE, Ph.D., F.R.S., and ALFRED TRIBE, F.Inst.C.E., Lecturer on Chemistry at Dulwich College. Crown 8vo. 2_s._ 6_d._ ON LIGHT. The Burnett Lectures. By GEORGE GABRIEL STOKES, M.A., P.R.S., &c., Fellow of Pembroke College, and Lucasian Professor of Mathematics in the University of Cambridge. Three Courses: I. On the Nature of Light; II. On Light as a Means of Investigation; III. On the Beneficial Effects of Light. Crown 8vo. 7_s._ 6_d._ CHEMISTRY OF PHOTOGRAPHY. By RAPHAEL MELDOLA, F.R.S., Professor of Chemistry in the Finsbury Technical College, City and Guilds of London Institute for the Advancement of Technical Education. Crown 8vo. 6_s._ MODERN VIEWS OF ELECTRICITY. By OLIVER J. LODGE, D.Sc., LL.D., F.R.S., Professor of Experimental Physics in University College, Liverpool. With Illustrations. Crown 8vo. 6_s._ 6_d._ TIMBER AND SOME OF ITS DISEASES. By H. MARSHALL WARD, F.R.S., Fellow of Christ's College, Cambridge, Professor of Botany at the Royal Indian Engineering College, Cooper's Hill. With Illustrations. Crown 8vo. 6_s._ _Others to follow._ MACMILLAN AND CO., LONDON. * * * * * EVERY THURSDAY AFTERNOON, Price 6_d._ (A Specimen Number, post free, 6-1/2_d._ stamps.) NATURE: A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE. NATURE contains Original Articles on all subjects coming within the domain of Science, contributed by the most eminent Scientists, belonging to all parts of the world. Reviews, setting forth the nature and value of recent Scientific works, are written for NATURE by men who are acknowledged masters in their particular departments. The Correspondence columns of NATURE, while forming a medium of Scientific discussion and of intercommunication among the most distinguished men of Science, have become the recognized organ for announcing new discoveries and new illustrations of Scientific principles among observers of Nature all the world over--from Japan to San Francisco, from New Zealand to Iceland. The Serial columns of NATURE contain the gist of the most important Papers that appear in the numerous Scientific Journals which are now published at home and abroad, in various languages; while longer Abstracts are given of the more valuable Papers which appear in foreign Journals. The Principal Scientific Societies and Academies of the world, British and foreign, have their transactions regularly recorded in NATURE, the Editor being in correspondence, for this purpose, with representatives of Societies in all parts of the world. Notes from the most trustworthy sources appear each week recording the latest gossip of the Scientific world at home and abroad.