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He had a younger brother Angelo who was a professor at the Philadelphia Academy of Sciences and two sisters.
He then visited BCI again as a member of the Academy of Natural Sciences of Philadelphia.
Chief among the specialists in Japanese mollusks at the time were Henry Augustus Pilsbry of the Academy of Natural Sciences in Philadelphia, and William Healey Dall of the Smithsonian Institution, who between them described more than a thousand marine and terrestrial species from Japan.