[64] Miller’s “New Walks in an Old Field.”
[68] June, 1842.
[84a] The principal families are named sphenopteris, neuropteris, and pecopteris.
[84b] A specimen from Bengal, in the staircase of the British Museum, is forty-five feet high.
[93] “Some of the most considerable dislocations of the border of the coal fields of Coalbrookdale and Dudley happened after the deposition of a part of the new red sandstone; but it is certain that those of Somersetshire and Gloucestershire were completed before the date of that rock.”—Philips.
[97] The immediate effects of the slow respiration of the reptilia are, a low temperature in their bodies, and a slow consumption of food. Requiring little oxygen, they could have existed in an atmosphere containing a less proportion of that gas to carbonic acid gas than what now obtains.
[99] The order to which frogs and toads belong.
[103] Dr. Buckland, quoting an article by Professor Hitchcock, in the American Journal of Science and Arts, 1836.
[108a] Murchison’s Silurian System, p. 583.
[108b] Buckland.