1832-1834: AGE 25-27.
Enters upon his Professorship at Neuchatel.--First Lecture.
--Success as a Teacher.--Love of Teaching.--Influence upon the
Scientific Life of Neuchatel.--Proposal from University of
Heidelberg.--Proposal declined.--Threatened Blindness.
--Correspondence with Humboldt.--Marriage.--Invitation from
Charpentier.--Invitation to visit England.--Wollaston Prize.--First
Number of "Poissons Fossiles."--Review of the Work.