[{2}] These Lectures were delivered to the members of the Natural Science Class at Chester in 1871.
[{3}] See a most charming paper on “The Physics of Arctic Ice,” by Dr. Robert Brown of Campster, published in the Quarterly Journal of the Geological Society, June, 1870. This article is so remarkable, not only for its sound scientific matter, but for the vividness and poetic beauty of its descriptions, that I must express a hope that the learned author will some day enlarge it, and publish it in a separate form.
[{4}] See Lyell, “Antiquity of Man,” p. 294 et seq.