American addresses : with a lecture on the study of biology /

I. Three lectures on evolution: I. The three hypotheses respecting the history of nature. II. The hypothesis of evolution. The neutral and the favourable evidence. III. The demonstrative evidence of evolution.--II. An address on the occasion of the opening of the Johns Hopkins university (Baltimore, September 12, 1876)--III. A lecture on the study of biology, in connection with the loan collection of scientific apparatus (South Kensington museum, December 16, 1876)Mode of access: Internet