Will you please to answer, through your first number, if convenient, the following queries, or give us an article or articles on them.

1. At what times in the year should the different kinds of pruning be performed in the cold latitudes of the north and in the milder climates of the south ?

2. What are the twelve best shade trees (I mean deciduous trees) for lawns and streets in our cold climate?

3. What are the best three pears for double-working on quince; or, in other words, what three pears unite best with and grow most vigorously on the quince?

4. What pears of American origin will grow single-worked, or double-worked, on the quince?

In order to help the matter along, or rather to allow you a chance to criticise me, I will now attempt to answer these queries myself. My present opinions are, that.

1. The heavy pruning (which is never necessary upon a well-trained tree) should be performed at the season when the leaves are off; the light pruning, in the season when the leaves are on the tree. I believe this rule will apply in all climates. But you, of course, will go more into detail.

2. The twelve best trees are, perhaps, American Weeping Elm, Horse-Chestnut, Sugar Maple, Norway Maple, Silver-leafed Maple, European Linden, White Ash, European Ash, American White Beech, Black Ash, Scotch Elm, Huntington Elm. To these, perhaps, we might add European Sycamore.

8. The pear which unites best with, and grows best upon, the quince, is the Glout Mor-ceau. Indeed, this pear, in its leaf, wood, and fruit, seems to be a sort of second cousin to the quince, or at least as nearly related as neighbor-in-law. Other fine growers on quince, are Beurre d'Amalis, Beurre Diel, and Vicar of Winkfield. But please add to, or correct, the list, as it seems to you best. Geo. Jaques. - Worcester, Mass.

[The above communication should have appeared in the last number, but was accidentally overlooked. The subjects touched upon are of such importance, and involve so many considerations, that instead of replying to them in the usual brief way, we have thought it better to take them up separately and treat them somewhat in detail, or in a series of articles, as suggested by our correspondent. Street and Avenue trees, and Pruning, have already been noticed. Other subjects will be found answered in the present number. - Ed].