Note 1102 — Chapter VII
Reading edition
The discoveries of M. Agassiz are embodied in his great work, Recherches sur les Poissons fossiles: but the reader who may not have an opportunity of consulting that costly publication, will find two essays by this eminent naturalist, which will give an idea of his treatment of the subject, in Reports of Brit. Assoc. for 1842, pp. 80–88, and for 1844, pp. 279–310. How essential this study is to the geologist, appears from the remark of Sir R. Murchison (Siluria, 1854, p. 417), that ‘fossil fishes have everywhere proved the most exact chronometers of the age of rocks.’