Illustrated Index of British Shells Containing figures of all the recent species

"Illustrated Index of British Shells" by G. B. Sowerby is a scientific publication from the 1800s, which acts as an illustrated guide to shells found in Britain, useful for naturalists and collectors. Recognizing that previous books were either too hard to understand or too costly, Sowerby created this guide to be easy to use and full of information. The book has pictures and descriptions of almost 600 different types of shells, explaining where they live, how they act, and where they can be found, making it a helpful resource for anyone wanting to learn about British shells.