The Royal Botanic Society of London was created in 1839. Its gardens in Regent's Park included a large conservatory, a library and a museum. It was closed when the land lease expired in 1931. James de Carle Sowerby, one of the founders, was elected Secretary, and was succeeded in that post by his descendants.
From the description of Letters, 1863-1896. (Getty Research Institute). WorldCat record id: 81972002