While writing this article, we have received a letter from Mr. Mowbray, curator of the Manchester garden, stating that we have misrepresented the mode of planting that garden when we affirmed (p. 413.) that "the nurses are composed of one common mixture throughout the garden." Such, assuredly, was, and still is, our impression. However, we are very likely in part wrong; which we exceedingly regret, for we have been long proud to call Mr. Mowbray our friend, and there is no man for whose independence of character we have more respect. We insert his letter under the head of Retrospective Criticism, and we invite such as take an interest in the matter to examine the garden, and send us a plan of two or three portions of the plantations referred to in Mr. Mowbray's letter, placing numbers in the plan for the position of each tree, and giving us a list of the names of the trees or shrubs corresponding with the numbers. This will decide the thing at once.