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"Another species, St. James's cockle, <em>P. Jacobaeus</em>, having been adopted in the Middle Ages as the badge of St. James of Spain, became also the distinction of the pilgrims returning from the Holy Land." &mdash; Goodrich, 1859

St, James' cockle

"Another species, St. James's cockle, P. Jacobaeus, having been adopted in the Middle Ages…

"The <em>U. elongata</em> is found in Great Britain, and formerly produced numerous pearly; these were famous even in the time of Julius Caeser. In Ireland and Scotland this species has produced pearly, in modern times, valued at between twenty to four hundred dollars." &mdash; Goodrich, 1859

Unio elongata

"The U. elongata is found in Great Britain, and formerly produced numerous pearly; these were…

"The <em>Perna isognomum</em> has a somewhat similar form to the Hammer Oyster; it lives in deep water, attached to rocks by its byssus." &mdash; Goodrich, 1859

Perna isognomum

"The Perna isognomum has a somewhat similar form to the Hammer Oyster; it lives in deep water,…

"Though inferior to the oyster, immense quantities of the Common Mussel, <em>Mytilus edulis</em>, are eaten in Europe." &mdash; Goodrich, 1859

Common mussel

"Though inferior to the oyster, immense quantities of the Common Mussel, Mytilus edulis, are…

"Furnishes the fines pearls; the shells are also imported in vast quanities, the inner layer, known as "mother of pearl", being used for a great number of ornamental purposes." &mdash; Goodrich, 1859

Pearl-oyster

"Furnishes the fines pearls; the shells are also imported in vast quanities, the inner layer, known…

"The <em>unio pictorium</em> is common in Europe, and derived its name from the fact that its shell was formerly used by painters to hold their colors." &mdash; Goodrich, 1859

Unio pictorium

"The unio pictorium is common in Europe, and derived its name from the fact that its shell…

"The <em>U. spinosa</em> is found in the Mississippi River." &mdash; Goodrich, 1859

Unio spinosa

"The U. spinosa is found in the Mississippi River." — Goodrich, 1859

"In the Arcacea the shells are nearly equal, usually thick and furnished with a long row of reeth at the hinge. Among them is the <em>Arca tortuosa</em> the shell somewhat twisted and striated' found in the Indian Ocean." &mdash; Goodrich, 1859

Arca tortuosa

"In the Arcacea the shells are nearly equal, usually thick and furnished with a long row of reeth at…