We have during the past month received some very flattering letters from Oregon, and what is more interesting to the publisher, some very long lists of subscribers. About thirty copies are taken at one post office, (Oregon City.) We give a few extracts from these letters:

"The Horticulturist is doing a philanthropic work for Oregon, by stimulating a few men to set the example of fruit culture before their fellow citizens, which is truly inspiring. I have no doubt that more attention is being paid to the growing of fruit in Oregon than in any other new territory in the Union. Messrs. Ladd and Levelling have truly become benefactors, by introducing at an early day, at great expense, and under most disheartening circumstances, so large a variety of the choicest orchard fruits from the States. They have lost many varieties in consequence of a want of sufficient care in putting up the young trees at the nurseries for shipment through a tropical climate. Other whole boxes have been ous carriers. Yet they have persevered, and succeeded in introducing about seventy varieties of Applea, forty of Peers, fifteen of Peaches, as many of Plums, twenty of Cherries, several of Quince; besides Nectarines, Apricots, Almonds, Currants, Gooseberries, and the Walnut and Hickory nuta They are doing well in their business.

Several varieties of their Apples, Pears, Peaches, Plums, Cherries, and other fruit, have borne the three last seasons. In general terms, they may be said to promise well, both in the size and quality of fruit Our trees fruit from one to three years younger here than in the Northern States, and produce more abundantly. No doubt your shy bearers would, with us, load themselves heavily with, fruit. This peculiar characteristic of our climate leads us to anticipate that our trees will be short lived, unless they receive a high state of culture. Is this a logical deduction What peculiar treatment will be necessary to supply trees with nutrition, where they load themselves beyond their capability of support, without breaking?" E. F. - Oregon City.

Maintain a vigorous growth by good culture of the soil around the trees, by occasional dressings of compost, and if necessary, thin the fruits. Pruning, also, stimulates the growth of over-fruitful trees. The following is an extract of a letter from J. W. Ladd:

"Fruit growing is attracting a lively interest throughout Oregon. The farmers are generally planting out large orchards of the choicest kinds of fruit We have most of the leading varieties cultivated in the Northern States. In the summer of 1847 Messrs Lewellen & Meek, from Iowa, brought across the plains most of the leading varieties of fruits cultivated in the West, and now have a large nursery and orchard of bearing trees at Milwaukie, eight miles below this place. Some of their Pears sold at a dollar each, Apples at twenty-five cents, and some, I believe fifty cents. I brought from New York in the fall of 1850 some twenty-three hundred fruit trees, embracing most of the leading varieties cultivated there. These were, I believe, the first trees ever brought to this coast by the Isthmus that lived. Fruit trees make an astonishing growth here, and bear early, and the fairest fruit that I ever beheld. Some fifteen different kinds have borne fruit this year, on small trees only one year from the bud.

Our climate seems peculiarly favorable to the growth of trees. I have not seen ice thicker than window glass this year. We have had only three hard frosts; just enough to stop the growth of trees. All kinds of hardy grass is yet growing finely, so that the loose stock are fat without being fed. J. W. L. - Oregon Cityt Dec. 10th".