Note 180 — LETTERS ON SCIENCE.

In connection with the question of glacier-motion, Mr. Ruskin’s estimate of Professor Forbes and his work is here reprinted from Rendu’s “Glaciers of Savoy” (Macmillan, 1874), pp. 205-207. For a passage on the same subject which was reprinted in the “Glaciers of Savoy,” in addition to the new matter republished here, and for a statement of the course of glacier-science, and the relation of Forbes to Agassiz, the reader is referred to “Fors Clavigera,” 1873, Letter 34, pp. 17-26. The “incidental passage” consists of a review of Professor Tyndall’s “Forms of Water” (London, 1872), and the “contemptible issue” was that of his position and Forbes’ amongst geological discoverers.