The subject of the action of Ammonia on plants is exciting considerable attention in England. We copy below from the Gardener’s Chronicle accounts of experiments, the first of which is being tried at the Horticultural Society’s Garden. M. Ville’s mode of giving Ammonia to plants, with a view to increase their bulk and vigour, is being tried in the large stove in which one of his apparatuses has been placed. It consists of two clear glass bottles with long necks, furnished with tight-fitting corks, in each of which is inserted a small bent glass tube. These two tubes are joined together by means of an India-rubber connection, or small hose, thus forming a communication between the two bottles. In the cork of one of the bottles is an escape tube (also of glass), which is connected (by means of a small India-rubber hose), with other small glass pipes that are laid all along and across the bed, and through which the ammonia is intended to pass, in order that it may be the better diffused among the plants. When the bottles are put to work, one is charged with chalk, on which is poured sulphuric acid, and the other with unslacked lime, over which is poured a solution of ammonia. The result of this experiment will, of course, be published in due time. Its conduct has been entrusted to Mr. Spriggs, the young man in charge of the house, who is to note down its effects daily, and report the same to the Vice-Secretary. In another column will be found some further account of furnishing plants with more ammonia than they can get under ordinary circumstances.