In the last issue of the magazine the chapter on. Herbaceous plants was credited to Mr. Wm. Sutherland instead of to Mr. W. H. Manning. Mr. Manning is the son of Mr. Jacob W. Manning of the Reading Nurseries near Boston, and one of the rising race of intelligent and worthy young men. of whom the generation now passing away may well be proud. Besides taking a pleasure in his respected father's business, he is ardently devoted to Botanical studies and other scientific pursuits, and is already an honored member of The American Association for the Advancement of Science. We very much regret that the paper of one so worthy of credit, should have been mis-appropriated by an oversight of our own.