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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1843 Excerpt: ...becomes nearly vertical. This analogy in the arrangement of the rocks on either side of the great chain is not the only one, for on either side of Mont Blanc is a secondary range also composed partly of granite. The Aiguilles Rouges (which however are not included in the section) are granitic, although separated from the main chain by the limestones of the valley of Chamouni, and the Mont Chetif, and part of the opposing Montagne de la RELATIONS OP GRANITE AND LIMESTONE. 211 Saxe near Counnayeur are in like manner granitic. The form of the latter mass, as shown in the section, is a great tabular body of imperfect granite, greenish, slaty, and containing an excess of quartz, with limestone above and below, very nearly in the manner in which the greenstone of Salisbury Crags, near Edinburgh, is interposed between the sandstones. Both the granite and limestone rise towards Mont Blanc, consequently, the limestones on the two sides of the Val Ferret rise towards the axis of that valley, --a very remarkable arrangement. The tabular mass of Mont Chetif is cut through by the Doire at the baths of La Saxe, where there is an excellent section: the granite is then lost under the Montagne de la Saxe to the eastward, which is chiefly composed of limestone which envelopes the granite, and is also covered with herbage. I had however remarked a summit parallel to the axis of Mont Blanc, on the eastern part of the ridge of this hill, which I suspected to be granite, and having made an excursion on purpose, I found my conjecture to be confirmed. This summit is called La Croix de la Bernada; it may be easily reached either from the Val Ferret, or from the little valley of La Saxe. Farther east the granite is again lost under the limestone. The general dip of the limestone moun..

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