A correspondent says:

"The Horticulturut is a great favorite of mine; in travelling through some sections yon can easily tell its subscribers by the appearance of their farms; you can see the beautiful young orchards springing up in fine order, while their neighbors, who could as well afford it, have not a tree or shrub on their places, although they have been what is called improving for the last fifteen or twenty years, yet their homesteads look as though they had squatted down last spring. They now begin to inquire of their neighbors how they derived such information; they, of course, refer them to the Horticulturist.

The crops look well, yet we are not without trouble, as we are subject to the ravages of insects to a frightful degree. About the middle of June, the woods in Illinois swarmed with locusts; they have punctured the small limbs of fruit and forest trees, and deposited their eggs; they are now beginning to disappear. There is also the insect, described by Professor Harris, page 48 of his report. They could be seen depositing their eggs in crevices in the bark of fruit and forest trees, all of which suffer severely from these borers while in the grub state, particularly the Apple, Peach, Mountain Ash, Horse Chestnut, Elms and Oaks; of the latter they seem only to attack stunted trees".

Washington Territory, away off on the Pacific, is knocking to be admitted a member of our horticultural parish. If there were any evidence wanting to prove the progress we are making, the following letter might be adduced from Grand Mound, W. T., March 20th, 1855.

I am happy to acknowledge the receipt of your Horticulturist for the past year with the exception of the November No, our mail of that date being lost between this place and California on the steamer Southerner. I being the only one who takes your Journal I have loaned my numbers to distribute for examination, and it has been attended with good success considering the newness of our country and by whom it is peopled. I think ere the year is out we can give you at least twenty names from our vicinity; once get an interest taken in Horticulture and the Horticulturist will take like Mot Cakes. I will assist Bet. Mr. Whitworth all I can in increasing its circulation.

We have many native fruits in this country which I think would be quite an acquisition to you in the eastern States for grafting or budding upon. I have seen Gooseberries in the woods here at least twenty-five feet high; this is a small, black berry when ripe; we have another variety which grows very large, the stalk resembling the currant in its growth; this is quite a large berry of an oblong shape measuring ¾ of an inch in diameter in a wild state; color dark red when ripe and said to be very rich and pleasant, I have not yet seen any of them, but 1 have secured some of the bushes from the woods and I will be able this year to fruit them, and if they prove as good as represented it will be quite an acquisition even to us. We have berries in profusion of all kinds I believe, except the high bushed Black Berry, Salmon, Service, Salal, Thimble Cran. Blue, Huckle, Straw. Rasp. and running Blackberries wild in the woods. We also have wild Rose Bushes which are very large and high. I have them on my claim some ten or twelve feet high and one-and-half inches in diameter. I am cultivating the most of the wild berries which I think will greatly improve them.

I find it is quite difficult to get any new varieties from the States. I am very desirous to see this country abound with every thing adapted to the climate. Many things do much better than in the Eastern States; vegetables grow in profusion. And I think we shall be able to grow the staple varieties of fruit L. D. Durgin.

Moan Evidence in favor OF Gas Lime: - Mr. Editor: - My limited experience, in the use of refuse lime from gas works, as a manure, is much more in accordance with Mr. Maxwell's views than yours, and for the following reasons.

In the spring of 1853, a lot in this vicinity was filled up some two feet or more, with earth from a hill side, and was covered with grass sods, without any soil or manure of any kind, being put beneath them - the grass was watered occasionally, during the dry hot season, but presented a very sickly appearance.

In the autumn of that year, it was covered with refuse lime from the gas works, and during last summer, it produced a most luxuriant growth of green grass, [Poa pratensis] and now, without any other application, is as pretty a sod, as any one need wish to see.

In consequence of this experiment, I covered my own grounds, last fall with it, and notwithstanding the cold backward season, I had on the 14th inst, a stout swarth taken from them, the grass being of a much deeper, and more healthy green than heretofore. I have also tried it in compost, with sufficient encouragement to repeat the trial, but it is more difficult, to form a correct judgment of its effect when combined with other manures, than when it is applied per se.

I have seen no analysis of the refuse lime, produced by the gas works at this place, but that it does contain, as suggested by the Agriculturist, a large per centage of caustic lime, (hydrate) I think may be shown, by stating the process adopted at the works. I am told the custom is, to remove the lime, many hours before it is saturated, with the impurities it is intended to arrest Is not the effect of this, to leave a large per centage not saturated, and consequently caustic.

Again, according to Prof. Johnson's analysis, as quoted by Mr. Maxwell, more than one-half is carbonate of lime, about one fifth is sulphate of lime, and three per cent alumina and oxide of iron - here then we have about seventy-fire per cent of vegetable stimulants. I think it probable, that much of the caustic or kiln lime, used as a manure by our farmers, does not contain much more of the essential stimulants, than this sample.

The transition limestone, that abounds in this vicinity, contains, in some localities, thirty-six per cent. of impurities, chiefly magnesia, which is obnoxious to vegetation. Now as I presume they use stone lime in the gas works at Toronto, may not the samples, used by the intelligent gentleman of whom you speak, have been of this character, and not rendered worthless comparatively, by passing through the gas works.

The sample analysed by Prof. Johnson, as quoted by you, must necessarily have contained a large excess of water, as it is used by the gas manufacturers, in the form of hydrate, otherwise it would not have been one-half water.

The mode of managing the lime here, I believe, is, to put it under cover after it has been used in the purification, and allow any excess of water it may contain to pass off, and so great is the demand for it, that the orders from the farmers are sometimes many months in advance of the supply, and so fully are they convinced of its value, that they pay six and a fourth cents per bushel, and haul it five or six miles, when they can purchase the fresh or kiln lime for ten or twelve cents.

As an evidence, that they are not behind their neighbours in the proper management of their farms, their beef is much sought after, and commands the highest price in the metropolis of New York, as their butter does in the cities of Baltimore and Washington, this I have heard them attribute to the superior pasture afforded by the green grass, the growth of which appears to be much promoted by this " vile refuse which should be buried many fathoms deep, in some barren region." Let us not, Mr. Editor, condemn it nolens volens as Dr. Ure appears to have done, but give it a fair and impartial trial, and if it should then be found to be worthless, reject it, and " strike it from the list that promises well." Yours repectfully M. West Cheater, Pa.

We are much obliged to M. and shall be to all who favor us in this way with their experience. We desire nothing so much as light, and above all the light of experience. We shall have still more information on this subject by and by.