Polycystins, figures of remarkable forms etc. . In the Barbados chalk deposit chiefly collected by Dr. Davy, and noticed in a lecture delivered to the Agricultural Society of Barbados, in July, 1846 This book, "Polycystins", by Edward Bury, is a replication of a book originally published before 1869. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible.