Excerpt from Memoirs and Proceedings of the Manchester Literary Philosophical Society, Vol. 7 Doubtless the plant is an established introduction, but when and by whom is never likely to be solved. Old walls and ruins seem to be the favourite habitat Of this plant, wherever found. The Rev. R. P. Murray, from whom I received specimens collected in 1888 near Oporto, Portugal, writes me that it grew plentifully on walls by the River Douro, opposite Oporto, and that he saw it nowhere else, but was told that it grew on rocks about a mile further away. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.