A correspondent inquires if it would be profitable to set out a thousand dwarf pear trees, with a view to marketing purposes. The answer must be - If such sorts are selected as have been found durable on the quince ; and if good and enriching cultivation is given them - they would probably prove quite profitable. They should be trained as half standards, that is, with heads on bare trunks about two feet high. This will prevent the danger of the lower limbs being split off by deep snow, and the only pruning they will require will be a thinning of useless shoots once a year, and preserving a neat ovate shape to the heads.

It must not be forgotten that the roots of the quince, being smaller and in a more compact circle than those of the pear, need a better sup-ply of the elements of fertility, if the tree is expected to receive its due amount of nourishment. Hence, constant and enriching cultivation must be given.

Among those sorts which have proved durable upon the quince, are Louise Bonne de Jersey, Stevens Genesee, Angouletne, Glout Mor-ceau, Passe Cohnar, Easter Beurre, Beurre d'Amalis, Diel, Doyenne Boussouck, etc. If any other varieties will grow freely on quince for a few years, but the first good crop of fruit, (even on double worked trees,) exhausts the trees, and they soon languish and die.

There is one great drawback on the profits to be expected from an orchard of dwarf, or of any other pears j this is the danger of loss from fire-blight, which to some cultivators, has resulted in as heavy loss as would have been the destruction of their dwellings by fire. Cultivators of the pear should form themselves into a mutual insurance company, for security against this loss.

The inquiry whether dwarf apple trees can be made to afford profitable crops for market, cannot, by any means, be answered so favorably. A tree ten years old will not yield perhaps a tenth part of the crop from an equally well treated standard. We have indeed known a distinguished cultivator to give the opinion, (we shall not say it is strictly correct.) that taking all circumstances into consideration, the average cost of apples from dwarf trees, as now cultivated, is about five dollars per bushel. They can be regarded only as curiosities - fancy articles, of which they afford sometimes very inte-resting specimens.