Mr. Charles Joly continues his essays on horticulture, as at present, in different parts of the globe. Since his essays on the horticulture of England and of the United States, one on that of Spain has appeared. He tells us that political and religious troubles in Spain, as well as in Italy, has retarded the progress of horticulture - but for all this recent occurrences develop the fact that science, horticulture included, has a wonderful vitality in these countries. The northern plateau, and the central portions of Spain, have a sad and denuded appearance; but the plains of Valencia and of Andalusia, both in culture and the beauty of its native vegetation, is not exceeded by any country on the globe.