To the temporary displacement of several esteemed articles from correspondents, we have made room to-day for about one-half of Mr. Rivers' extremely interesting and agreeable little book, from the fifth English edition, on Orchard Houses. It has not been previously published in this country, and as it is desirable to make the Horticulturist a work of reference for the future as well as interesting for the present, we take particular pleasure in introducing the subject so fully and ably to our readers. We find the following description of an Orchard House at Sydenham, England, in a late London periodical, showing the practical character of the operation.

"Among glass houses is an orchard house filled with beautiful little fruit trees in pots, now in full blossom, with the exception of the apricot-peach on which fruit is already fairly set. All are in 12-inch pots, not placed on beds of rich soil into which the roots are allowed to pass, but set on wooden stages or shelves, and liberally fed with liquid manure. Thus managed they bear abundantly, each peach and nectarine having on it from sixty to seventy fruit, and one had as many as eighty on one tree. The fruit, too, tasted in comparison with that from walls, proved the better flavored of the two. Plums bear most abundantly, as do also pears. The French plan of inserting fruit buds on barren spurs or naked branches has been largely practised here both in and out of doors, but with what result has yet to be proved, the work being only just completed. It may be mentioned that although this house is furnished with a hot water apparatus, yet it is not used except in very severe winters. It has therefore not been required this season. The pots are mulched with old cloth waste, which costs 3s. 6d. per sack. It has a clean and neat appearance, keeps the soil from drying too rapidly, and from being washed into holes by repeated waterings.

Among the pots in which the trees are growing are placed bedding plants, of which large quantities are required here in summer".