News of K. E. von Baer’s support is magnificent – far outweighs Owen and Agassiz. Asks THH to tell Baer that a statement from him would be of utmost value.
R. Wagner [in an article on Louis Agassiz’s principles of classification, Göttingsche gelehrte Anzeiger (1860) pt 2: 761–800] "goes half way" between Agassiz and Origin.