Conchology

Conchology, that branch of natural history which deals with the shells of molluscs. From the time of Aristotle the beauty and variety of these structures have made them favourite objects of study, and few zoological subjects have excited so much popular enthusiasm. The study often became unscientific, and sometimes a craze, as when extravagant sums were paid for rare forms of no particular beauty or interest. Since the shells are only external coverings, and were seldom considered in relation to their tenants, or in connection with the internal and external influences to which they owe their shapes, conchology has been somewhat barren of scientific results. It is, however, possible that with the accumulation of knowledge in regard to the constitution and conditions of molluscs, the study of their shells may come to have fresh scientific interest and dignity. See BIVALVES, MOLLUSCA, SHELLS, &c.