Morgan expeditions, 1870-'71 on the Devonian trilobites and mollusks of Erere, province of Para, Brazil This book, "Morgan expeditions, 1870-'71 on the Devonian trilobites and mollusks of Ereré, province of Pará, Brazil", by Charles Frederick Hartt, is a replication of a book originally published before 1875. 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. This book was created using print-on-demand technology. Thank you for supporting classic literature.