The remarks of several correspondents in the July number of your paper, on the subject of Fruit Culture at the South, have induced me to throw together a few thoughts on the subject, which are the result of my own experience and observation.

I have several times been surprised at the complaints made through your columns, against fruit trees of northern growth or origin. I live between the 32d and 33d degrees of north latitude, about sixty miles west of the city of Macon. My orchard comprises about thirty of the most popular varieties of the peach and nectarine, and so far from blooming out of season, or casting their fruit, I would gladly stipulate to have only a third of the fruit on the trees, which is yearly set. The late frost this year destroyed so much of the young fruit, that I supposed myself to be safe against the calamities of overbearing. Not so. A loud crash advertised us a few days ago of the fall of at least half of one of my best peach trees, with its rich burden within a few days of perfect ripeness! One of the/etc varieties which seem to be exempt from this objection, is a native. It is the " Columbia," (well known in northern nurseries,) obtained direct from Columbia county, where it will be found in great perfection. The "Lemon Cling," also of touthern origin, does not suffer so much - while " George 4th," " Newingtons," " Prentiss* Red Cling," and others, break down. " Van Zandt's Superb" is in perfection with us now, (July 10,) measuring from nine to eleven inches in circumference.

I do not believe that peaches will succeed at the south near the coast, and this may be one reason why they fail in Mobile. I know a gentleman within a mile of the city of Savannah, who has a large orchard, well stocked with fine varieties. His trees look remarkably well, and set fruit abundantly in the spring, but he has never matured any of consequence. To the fine varieties of foreign apples named by Mr. Whits, as succeeding well at the south, I would add the " Red Astrachan" and " Boston Russet." A clerical friend residing near Griffin, (about fifty miles north of this,) told me in 1849, when fresh from the Boston Fair, that he could have beaten their finest Russets with fruit from his own trees. My trees are young, but the " Yellow Bellefieur" and Gravenstein promise well, in addition to some others not generally known here.

As for Pears - judging from the favor in soil and climate, asked in your work on "Fruits and Fruit-Trees," for many varieties, and the perfection in which they are easily produced here, I have arrived at the conclusion that our's is the better climate for this fruit. The gentleman to whom I have alluded above, imported about seven years ago, the following varieties of Pear, all on Quince roots. " Louise Bonne de Jersey," Beurre de A ma lis, Citron de Cannes, Passe Colmar,' Easter Beurre, Beurre Diel, Glout Morceau, Vicar of Winktield, Doyenne Gris, and one other by mistake, without a name. He planted them in a close brown chestnut soil. He pruned the branches but little, and never touched the roots. In five years the trees, (which were small when planted,) were in full bearing, and with the exception of one, which is diseased, they produce yearly as much fine fruit as they can hold. But what will you think when I tell you that his " Easter Beurre" is in perfection here early in October! The Vicar of Winkfield" ripened earlier. My own trees are all young.

Among those in bearing are Dearborn's Seedling, Louise Bonne de Jersey, Citron des Cannes, St. Ghialain, Julienne, Rushinore, Andrews, Beurre de Capiamont, Coinpte de Lawry, Buffura, Seckel, Knight's Monarch, Bartlett, Femish Beauty and Napoleon. Many of these are on quince roots.

I observe that your correspondent, Mr. Pardek, distinguishes between the fertilizers which produce the vine, and those which promote fruit fulness in the strawberry. I visited Doctor Bayne in October last, and procured, in his neighborhood, a few genuine plants of Alice Maud Strawberry. I planted them out in November, and they have given me nothing except most luxuriant vines. They were treated with guano and barn yard manure. Burr's Mammoth, planted at the same time, but not highly manured, has produced fruit abundantly. Perhaps I have fallen into the very error to which your correspondent alludes. With other varieties I succeed well. Doctor Bayne's cabbages, of which he speaks, had probably ceased to grow, before they were overtaken by the severe frost of the last most extraordinary winter, and were indebted to that circumstance for their preservation. The thermometer stood with us 26 degrees below the freezing point, and I lost hundreds of cauliflowers and cabbages, all in a growing state, and either headed or heading.

I had rose bushes, for the first time in my life, killed to the ground, and Lilliputian Chrysanthemums, which I planted out in November. These plants were all in a growing state, and I suppose on that account were killed. Every Fig tree I own, embracing eight or ten varieties, was killed to the ground, with the exception of a variety known here as the Celestial, but which I think is the Angelique. Almost every peach tree was injured on the same side of the trunk. I cannot impute this to the sun of last summer, as some which have suffered most were shaded by branches reaching to the ground.

Two questions now, Mr. Editor, and I have done. What is the " sulphate of ammonia?" Not a druggist in the little town in which I live, knows anything about it. I should like to know by what name to order it, the form in which it comes, and its probable cost. [It is only to be had of the wholesale druggists in the cities. Ed.] How does it happen that particular soils are recommended for some varieties of the Pear? Should not the soil be adapted to the stock on which we work, rather than to the tree we aim to produce? [Certainly, to the stock. Ed.] Our success with the pear on the quince in heavy soils would indicate this. Testis.

July 10,1852.

We are much obliged to out correspondent, in whom we recognize one of the best cultivators at the South. It gives us a new feeling of the breadth of our country, to know that before strawberries are ripe at the northern part of the Union, peaches are in perfection at the other. Our correspondent's trouble with his peaches - i.e., their breaking down with the abundance of fine fruit, will please the fancy of some of our British readers who find it hard enough to make the fruit hang on at all. Ed.