This book brings together works published between 1846 and 1859 by the Scot James D. Forbes (1809-68) and Irishman John Tyndall (1820-93), both of whom were experienced alpinists as well as glaciologists. However, their views on the motion of glaciers were disparate, and a scientific quarrel over primacy and credit for discoveries continued even after their respective deaths. These papers include Forbes' articles on experiments on the flow of plastic bodies and analogies between lava and glacier flows, and on the plasticity of glacier ice, as well as Tyndall's observations on the physical phenomena of various Alpine glaciers, including the famous 'Mer de Glace', and a piece on the structure and motion of glaciers, co-written with Thomas Huxley. Several works by and about all three scientists (including works on Alpine travel) have also been reissued in this series.

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.