The Conchologist's First Book / A System of Testaceous Malacology, Arranged Expressly for the Use of Schools, in Which the Animals, According to Cuvier, Are Given With the Shells, a Great Number of New Species Added, and the Whole Brought Up, as Accurately as Possible, to the Present Condition of the Science.

by Edgar Allan Poe; Thomas Brown

All other protuberances, furrows, &c., will be described at the end of this work in a Glossary of Terms used in the Science.

DESCRIPTION OF PLATE [IV].
HINGES OF BIVALVE SHELLS.

Fig. 1. Hinge of the Unio pictorum, a Primary tooth, c c double teeth.

Fig. 2. Hinge of the Solen. b Lateral teeth.

Fig. 3. Hinge of the Lucina radula, a a Primary teeth, n cartilage.

Fig. 4. Hinge of the Cardium. b Lateral tooth, d d middle teeth, l l spines.

Fig. 5. Hinge of the Lutraria.

Fig. 6. Inside of both valves of the Donax trunculus. A is the left valve, and B is the right valve, b lateral teeth, e primary complicated tooth, or cleft in the middle, m m crenulated margin.

Fig. 7. Hinge of the Venus, a a Primary teeth.

Fig. 8. Hinge of Spondylus gæderopus, f f incurved teeth.