Letters from Duncker & Humblot to Charles Lyell, 5 March 1867-5 March 1867

Letters relate to Lyell's works published in Germany:
1) Duncker announcing safe arrival of corrigenda and M.S at Cotta’s
2) Sum paid to Vieweg for translation
Carl von Cotta defended the concept of evolution and was a supporter of Lyell's principle of uniformitarianism however questioned Lyell's claim that earth was a fluctuation of eternally equal forces, noting the earth's historical development. Vieweg was a specialist German publisher.