Published online by Cambridge University Press: 17 January 2013
Although we have many writers on geological subjects, whose works are distinguished by ingenuity of doctrine, and novelty of opinion, and, among them, some who have made advances towards arrangement; it was reserved to the celebrated Werner, to introduce means, by which rocks might be described with some degree of precision. Many ingenious theories were invented, to account for their formation; but little or no attention was paid, to the acquirement of an accurate knowledge, either of their composition, or their relative position in nature; although these certainly appear to be the bases, on which such speculative opinions ought to be founded.
page 111 note * In Werner's Preface to his Theory of Veins, he states, that his limited fortune, and the nature of his present situation, prevented him from travelling into more distant countries. Anderson's Translation, XXIII.
page 112 note * Jameson's Mineralogy, vol. III. p. 146.
page 113 note * Werner, “after the most arduous and long-continued investigation, conducted with the most consummate address, discovered the general structure of the crust of the globe,” &c. Jameson's Mineralogy, vol. III. p. 42.
page 113 note † Jameson's Mineralogy, vol. III. p. 147.
page 114 note * Illustrations of the Huttonian Theory, p. 165.
page 114 note † I suspect both these abound in the mountains of Cumberland, from specimens I have picked up among the loose fragments.
page 115 note * This term has been applied to distinguish the sandstone strata, and in that sense I now use it; it is objectionable, however; for all stratified rocks present the phenomena of parallelism, consequently, without qualification, this term affords no distinction.
page 116 note * Geological Transactions, vol. I. p. 212.
page 118 note * The numbers refer to the Appendix, at the end of this paper.
page 118 note † Geological Transactions, vol. I. p. 112.
page 119 note * The specimens alluded to, were examined by the gentlemen present when this paper was read, who considered those from the road leading to Carclaze mine, and from near Oakhampton, as Grauwacke; and those from the vicinity of Penzance as Greenstone.
page 120 note * Since I read this paper, I have had occasion to pass through the transition country of Peeblesshire, &c. On former occasions, I was in the habit of searching lor characteristic specimens of the grauwacke; I now looked for such as resembled the killas of Cornwall, which I found in abundance, (Nos. 62, 63.).
page 122 note * Jameson's Mineralogy, vol. III. p. 102, &c.
page 124 note * Jameson's Mineralogy, vol. III. p. 275.
page 125 note * Since I read this paper, I wrote to a friend at Coniston, requesting a few of these specimens, well characterised, might be sent me: some of which are deposited, along with the rest, in the cabinet of the Society, (Nos. 64, 65.)
page 126 note * Illustrations of the Huttonian Theory, p. 318.
page 127 note * Transactions of the Geological Society, vol. I. p. 147.