Fragments of Science - Vol I: 1 Book

ALPS, ETC. VOL. I NEW YOEK D. APPLETON AND COMPANY 1892 Autfarized MUion. PLTBLISHEBS 5 NOTE. THE first edition of Prof. Tyndalls Fragments of Science was published some twenty years-ago as a sin gle volume, which, was made up of a score or more of his detached essays, addresses, and reviews. The book was afterward revised, some of the papers recast, and from time to time new ones added, until, the size of the work becoming somewhat unwieldy, the present two volume edition was decided upon. This contains fifteen additional papers, and represents the authors latest changes and revisions. The volumes are uniform with Itfew Fragments, recently issued, and the three to gether include all the occasional writings which their author has decided to preserve in permanent form. PEEFACB TO THE SIXTH EDITION, To AVOID nnwieldiness of bulk this edition of the 4 Fragments is published in two volumes, instead of, as heretofore, in one. The first volume deals almost exclusively with the laws and phenomena of matter. The second trenches upon questions in which the phenomena of matter in terlace more or less with those of mind. Few Essays have been added, while old ones have been revised, and in part recast. To be clear, without being superficial, has been my aim throughout. In neither volume have I aspired to sit in the seat of the scornful, but rather to treat the questions touched upon with a tolerance, if not a reverence, befitting their difficulty and weight. Holding, as I do, the nebular hypothesis, I am logi cally bound to deduce the life of the world from forces PREFACE. inherent In the nebula. With this view, which Is set forth in the second volume, it seemed but fair to associate the reasons which cause me to conclude that every attempt made in our day to generate life independently of antecedent life has utterly broken down. A discourse on the Electric Light winds up the second volume. The incongruity of its position is to be referred to the lateness of its deliveiy. CONTENTS OP THE FIEST VOLUME CHAPTER I. THE CONSTITUTION OF NATURE , . 3 II. RADIATION . . . . . . . 28 HI. ON RADIANT HEAT IN RELATION TO TUB COLOUR AND CHEMICAL CONSTITUTION OF BODIES , 74 IV. NEW CHEMICAL REACTIONS PRODUCED BY LIGHT . 9G V. THE SKY ....... 131 VI. VOYAGE TO ALGERIA TO OBSERVE THE ECLIPSE . 14 2 VII. NIAGARA . . . . , . .175 VIII. THE PARALLEL ROADS OF GLEN ROY . . . 205 IS. ALPINE SCULPTURE ..... 229 X. RECENT EXPERIMENTS ON FOG-SIGNALS . . . 253 XI, ON THE STUDY OF PHYSICS . . .281 XII. ON CRYSTALLINE AND SLATY CLEAVAGE . . 304 XIII. ON PARAMAGNETIC AND DIAMAGNETIC FORCES , 321 XIV. PHYSICAL BASIS OF SOLAR CHEMISTRY . . . 329 XV. ELEMENTARY MAGNETISM . , .343 XVI. ON FORCE . . , . . . . 369 XVII. CONTRIBUTIONS TO MOLECULAR PHYSICS . . 386 X CONTENTS, CHAPTER PACU3 XVIII. LIFE AND LETTEBS OF FARADAY . . 399 XIX. THE COPLEY MEDALLIST OF 1870 . 422 XX, THE COPLEY MEDALLIST OF 1871 . 4 29 XXI. DEATH BY LIGHTNING-, 439 XXII. SCIENCE AND THK SPIEITS . . . 444 MAP SHOWING THE PARALLEL EOADS OF GLEN ROY to OCG p, 227 VOL. I. EsTOEGANIC NATUEBRead More