The Quarterly Journal Of Conchology Vol 1 PDF Download

Excerpt from The Quarterly Journal of Conchology, Vol. 1: May, 1874 Journal to give from time to time outline sketches of abnormal forms under recognised varietal names - given by such eminent authorities as Jeffreys, for instance - it would be very valuable and interesting, especially to the student subscribers of this interesting Journal. In the foregoing remarks I have but alluded casually to the varia tion of the animal which inhabits the shell, which doubtless varies more or less in conformity to the variations in the shell, either in some particular organ which regulates colour or texture or general form combined but as these particulars are not mentioned by authors generally, except such variation as relates to colour in the animal, we may infer that difference in the shell is chie y recognised in the naming of varieties of such that are shell-bearing. The fact that when any difference in form is made apparent in any particular organ or combination of organs in the animal which inhabits the shell, it is then placed upon debatable ground as to its rank as species or variety; this shows how important variation in form is to be considered in relation to other varietal differences. I wish to repeat again that if it was well understood by Concho logical students what a named variety was according to some recognised standard, what additional value and importance it would give to the combined Observances of Conchologists and collectors in noting that such a variety of some particular species had been found on the sea-coast or inland situation, on the mountain or in the valley, in the woods or in the open field, on rocks or in the marsh, in the water, fresh or brackish in the running stream or standing pool; or water charged with inorganic compounds, as iron and lime 3 or organic compounds, as vegetable or dead animal matter; or geologically, on chalk, limestone, sandstone, slate, or coal, &c. Observations made under these circumstances and noted from time to time in this Journal, I venture to think would help to elucidate the causes of variation and the geographical distribution of species. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."