I Cannot sufficiently welcome the two letters devoted to myself in the July Number of the Geological Magazine; and I only hope Mr. Harker and Mr. Deeley will continue to face the issues between us, and not be content, as others have been, with fulminating more or less testy protests, and then retiring from the field.

Mr. Deeley objects to my statement that the tendency of the most philosophical writers on geology is to go back from the scholastic formula of Uniformity enunciated by Lyell and Kamsay to more inductive reasoning. With the writings of Suess and Lapparent, of Spencer and of Prestwich, before me, all of them veterans of the first class, I cannot either understand or appreciate Mr. Deeley's protest.