Siluria. A history of the oldest rocks in the British isles and other countries; with sketches of the origin and distribution of native gold, the general succession of geological formations, and changes of the earth's surface. By Sir R. I. Murchison, Bart., K.C.B., &c. &c. &c. [Third Edition.] Fourth Edition including the ‘Silurian System.’ With geological map and numerous illustrations. 8vo, 1867

" Siluria. A history of the oldest rocks in the British isles and other countries; with sketches of the origin and distribution of native gold, the general succession of geological formations, and changes of the earth's surface. By Sir R. I. Murchison, Bart., K.C.B., &c. &c. &c. [Third Edition.] Fourth Edition including the ‘Silurian System.’ With geological map and numerous illustrations. 8vo, 1867." Journal of Natural History, 2(8), p. 152