Book-bot.com - read famous books online for free

Theory of the Earth, Volume 2 (of 4) by James Hutton
page 48 of 341 (14%)
and give all the means of information which the extremely attentive
observations of this naturalist has furnished to the world of letters.

At Oberwinter our author remarks a stratum of consolidated sand above
volcanic matter, Tome 4, p. 162. «Tant que j'ai parcouru le pied du
cône, je n'ai vu qu'un terrain composé de ces débris, et cultivé en
vignes. Mais après l'avoir dépassé, j'ai trouvé la coupe verticale d'une
colline à couches pierreuses, si réguliers, que je les ai prises au
premier coup d'oeil pour de la pierre à chaux. L'esprit de nitre m'a
détrompé: c'est une pierre sableuse très compacte, dont les couches, qui
n'ont souvent que quelques pouces d'épaisseur, s'élèvent par une pente
insensible vers le cône volcanique qu'elle recouvrent de ce coté là
sans aucune apparence de désordre. Ces couches qui sont visiblement des
dépôts de la mer, quoique je n'y ai pas trouvé de corps marins, ont été
formées depuis que le cône s'étoit élevé.»

This is a species of reasoning which this acute naturalist would surely
not have let pass in any other cosmologist. But here the love of system,
or a particular theory, seems to have warped his judgment. For, had
our author been treating of beds or bodies deposited in water, and
preserving the natural situation in which they had been formed, he would
have had reason to conclude that the superior bed was of the latest
formation; but here is no question of superincumbent strata; it is a
stratum which is superincumbent on a lava; and it is equally natural to
suppose the lava posterior to the stratum as the stratum posterior to
the lava.

Our author meets with a limestone too much erected in its position to be
supposed as in its natural place, and then he explains this phenomenon
in the following manner, p. 333. «Les rochers d'Ehrentbreitstein et
DigitalOcean Referral Badge