A manual of the land and fresh-water shells of the British Islands / with figures of each of the kinds. By William Turton, M. D.

  • Turton, William, 1762-1835.
Date:
1840
Catalogue details

Licence: Public Domain Mark

Credit: A manual of the land and fresh-water shells of the British Islands / with figures of each of the kinds. By William Turton, M. D. Source: Wellcome Collection.

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    been observed to be most liable to variation, and also the monstrosities which, from the mode of forma- tion of the shell, and some peculiarities in the habit of the different species, are likely to take place in each of them. To illustrate the animals of the different families and genera, a series of vignettes has been given; and further to assist in determining the spe- cies, some wood-cut figures of the shells have been interspersed in the text. All the new species introduced into the work, and the more remarkable varieties, have been figured, and added to the plates (except Vertigo angustior, which could not be procured); and the whole of the figures which were given in the former edition have been compared with the specimens, and corrected where required. ‘There have also been added to these plates other figures of the same species, and enlarged details of those parts of the smaller kinds which are calculated to facilitate the determination of the spe- cies. Indeed, although this work has been called in the titlepage a new edition of Dr.Turton’s Manual, it may be almost considered a new publication, as the only portions of the former edition that have been retained are the descriptions of the species, and a few of the general observations ; in so much that, on revising it in its printed form, it is a matter of regret to me, that it was not rather undertaken as an entirely new work, which would not have cost me nearly so much trouble as editing the present one. I have only further to return my thanks for the