File:The Quarterly journal of the Geological Society of London (1881) (14770695065).jpg

Identifier: quarterlyjourna371881geol (find matches)
Title: The Quarterly journal of the Geological Society of London
Year: 1845 (1840s)
Authors: Geological Society of London
Subjects: Geology
Publisher: London (etc.)
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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the larger mammalia, though few, including oxand deer, were found. Amongst them was found a tooth not to bedistinguished by itself from a human incisor; but the subsequentdiscovery of the remains of wolf leads to the inference that it maybelong to that animal, the difference in the incisors being with diffi-culty distinguished. Several Rhaetic teeth, showing from their worncondition that they are derived, and a few Carboniferous-Limestonecorals and shells are mixed with the above, as well as pebbles ofhaematite and bog-iron ore. The deposit, with its Rhaetic remains, was in a north-and-southfissure a little west of the above; but it is now all but exhausted.Without reference to other mineralized veins in which no organismshave been found, it will be seen that at Hoi well alone, and in theline of a single quarry of but a few hundred feet length, Post-pliocene, Liassic, Rhaetic, and Carboniferous-Limestone formations arerepresented. These later deposits are the rule, not only where they
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DEPOSITS 1ST THE BRISTOL DISTRICT, 71 fringe the outcrop of the older rocks, but high up on their table-lands, as in the case of the Charterhouse lead-mine, nearCheddar. The Bristol Area. Before proceeding with a description of the Bristol area andcomparing it with the above, it is desirable I should advert to a newpalseontological feature which hitherto has not attracted any atten-tion, in the presence of a multitude of minute Serpula-Mke calcareoustubes found in various deposits under examination. Tears ago Inoticed them in the freshwater brick-earth of Salisbury, which is ofPostpliocene age, and put them aside as minute Serpulce; but after-wards learning that all species of this family are marine, I thoughtthey might possibly be analogous to caddis-cases, and belong to someinsect. When they were afterwards found in enormous numbers,and under many diverse circumstances, I saw the desirability oflearning more about them, and sent them to friends who wereauthorities in special departm

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