The season is prolific in new varieties of grapes; from J. Fisk Allen, Esq., we have received a box of specimens of his new hybrids. The Rebecca, all our correspondents agree in praising very highly, and, by the report of the Pomologies! Society, it will be seen that new seedlings, raised by Mr. Raabe, of Philadelphia, are exciting attention.

Our specimen of "Allen's Hybrid," a white grape, ripening in August, is highly satisfactory - indeed, we pronounce it the best yet produced; if it prove hardy, which is hoped, it will be a most desirable acquisition, and it is equal to any in flavor.

Allen's No. 8, raised under glass, is a black grape, which it is hoped wilt also be hardy; about the size of Isabella, and excellent.

No. 3 is larger than Isabella, but not being ripe we cannot characterise. It has a good appearance. Mr. Allen is entitled to great credit for his exertions in this department. He says: -

Salem, Mass., Oct. 6,1856.

J, Jay Smith, Esq. - Dear Sir: According to my promise, I now send you specimens of Allen's Hybrid, a white grape, and a Black Hybrid, No. 6, These were raised under glass, but not forced, and on an eastern exposure, where but a few hours' sun fell upon the house or vine. The white-grape flowered on the 7th of May, and was ripe the 15th of August, and has hung upon the vine since, during all the excessive rains of the past two months, amounting, in my garden, to sixteen and a half inches, without decay of any amount. This grape is as early (if not earlier), in maturing as any European variety of any value. In quality, equal to the Chasselas in its best condition. The vine has stood the last winter in the open air, and, I have no doubt will prove sufficiently hardy for open culture on walls of senses, and, I hope, will even be suitable for field culture. No. 8 is not so good or so early as the white, but it is free from pulp and the foxy flavor. Several other vines of the same finally of Hybrida, have fruited in the open air this year, and withstood the severs cold of last winter unprotected. The mildew has been mors, extensive this year than usual, and the excessive rains have-not only delayed the ripening of outdoor grapes, but injured their flavor.

Respectfully yours, Jour Fisk Allen W. Brocksbank, of Hudson, N. Y., forwards us a box of the Rebecca Grape, and says: -

"The vine is an accidental seedling, which originated in the garden of Mr. G. M. Peake, of Hudson.N. Y., whether from the seed of native or foreign grape, is not known, although its aroma and other characteristics indicate it to be of native origin. It is perfectly hardy, enduring our severest winters, in any exposure, without injury.

"The original vine has fruited for the last five years; one, three years old, from a layer, has now upon it at least a hundred good-sized bunches of fruit. It is a good bearer and thrifty grower, extending its shoots from fifteen to twenty feet in one season, with good cultivation. Fruit ripens a week or ten days earlier than the Isabella," .

A correspondent who has seen the "Rebecca" vines, says: "From the foliage, I entertain no doubt of its native origin." Another assures us that it was considered, at the Pomolo-gical Convention, the best native grape yet brought into notice. A third "looks for quite a furor about this grape," and suggests "planting it alongside a Chasselas of Fontainbleu, and dusting the blossoms together, hoping to raise a seedling which will combine the hardiness of the one with the excellent flavor and fine bunches of the other." Really, this grape is, in our opinion, a great success. We are not informed whether Mr. B. is prepared to take orders for vines, but trust that he is, and that he will be fully rewarded for his discovery of such a delicious and compactly bunched, white, hardy grape. "Allen's Hybrid" and the "Rebecca," are destined to be great favorites, and to supersede some of our present best table grapes.

Grapes #1

Could we venture to mention the various sources from which the noblest grapes from private greenhouses have been forwarded during a protracted confinement, we should employ much space. We must record, however, two magnifioent baskets from Staten Island, which would do credit to "a king's gardener-" To G. R. S., too, whose grapery is a perfect thing, we are thrice in debt.

Grapes #2

An editor fed.upon forced sweet grapes, could scarcely be expected to grow sour. Several parcels, and baskets, and boxes of delicious hothouse grapes, have the express-men delivered at our door the past month; such grapes as only can be grown in America, and, we must say it, as are rarely grown, except at the North, where the cold is of so long continuance as to make in-door culture of fruit a necessity to the wealthy. We dare not particularise, but will go so far as to say, some of these pearly festoons are from graperies described in the Horticulturist, and from friends who will receive this as it is meant - a memento of grateful remembrances. The Hon. William Elliott, in his capital sketches, called Carolina Sports, says a truth which may be applied to grape and orchard houses, when he exclaims over the haunches of three saddles of venison, and a wild turkey of his own shooting: " My young sporting friends, a word in your ear: the worst use you can make of your game, is to eat it yourselves!.