The subject of obtaining new, hardy varieties of Grapes, which will mature in our climate, has occupied the attention of our cultivators for a number of years. Probably in no State in the Union are so various experiments being tried at the present time, as in this. Many of these are of the toss-up-a-copper stamp - sowing seed at random, hoping that good luck will follow. In other cases, men are engaged in searching for every marked variety in field, wood, or cultivated ground; a successful instance of which is Mr. Brackett, the well known sculptor. Among those who are trying careful experiments in hybridizing, Mr. Allen, of Salem, probably stands foremost It may not be uninteresting to the widely scattered readers of the Horticulturist to see a statement of results for the past year.

On the 12th of September, the first day of the annual exhibition of the Massachusetts Horticultural Society, the famous Concord Grape, made its first appearance for the season. As it has already been noticed in your pages, it is unnecessary to say more than this - that in appearance it was "superior," and to the taste it was nearly, if not quite ripe. At the same time and place, Mr. Geo. B. Cutter exhibited several dishes of "superior" Grapes, marked "Isabella." Who shall decide when doctors disagree ? By some it was affirmed that it was the Concord, by others, Isabella, and others said it was neither the one nor the other. It was asked, if this is the Isabella, how happens it that these specimens, which are equal to any ever ripened in the State, should come from Weston, and not from city vines protected by brick walls ? It was noticeable that no specimens of Isabella of any merit, excepting these, nor even Diana, were to be seen on the tables. Mr. Cutter obtained his vine from the Messrs. Winshir, some years since, from which, I am informed, he has obtained quite a vineyard.

He has been known in our market for two or three years, as the producer of very fine and early Grapes. I have heard of two or three other instances of vines obtained from the same source, which have produced Grapes which were thought to be earlier and different from the Isabella. Is it presumption in me to doubt the unanimous opinion of so many good judges from the Pomological Convention, who pronounced upon this this Grape? Its appearance was, in my judgment, slightly different from the Isabella, its time of ripening quite different, its flavor slightly inferior. I am well aware that difference of soil and culture may have caused all this seeming difference, but may it not also be - is it not the more probable that, in the course of propagation by the Messrs. Winship, a chance seedling has been produced, which has sailed under false colors until now? Is it easier to believe that with no extraordinary culture or advantages, Mr. Cutter has ripened the same variety of Grape at least ten days or a fortnight earlier than all others! It may be, yet I still doubt.

After the annual exhibition, the first weekly exhibition was held on the 30th of September, at which time a remarkably fine display was made of Concord, Isabella, Diana, Catawba, Pond's Seedling, Stetson's No. 4, and the "Breck Grape," also, Black Hamburg, perfectly ripened from open culture. For Isabella exhibited at this time, Mr. Cutter took the first premium.

At a session of the Fruit Committee, held October 7th, Mr. Samuel Downer presented a seedling called the - Grape, and said to come from the Catawba. It, however, bore a nearer resemblance to the Isabella, though its bunches and berries were much larger, and its flavor more than equal to it.

On the 14th of October, Mr. Joseph Breck exhibited Wyman's Seedling, as to the origin of which no reliable statement is given. In size, appearance, and flavor, it was decidedly superior, and received the unanimous award of the Fruit Committee, as the best new variety of the season. Its time of ripening is not fully ascertained, but it is asserted to be the same with the Isabella, if not earlier. If this is the case, all who have seen it will agree it is a decided acquisition.

In addition to the above, Mr. Allen sent to the Society, about the 1st of September, a few berries of a hybrid Grape grown under glass, which has the true foliage of our native Grapes, the fruit of which, however, resembles the White Chasselas. It was not tested. Mr. Allen is very sanguine it will prove to be hardy and a great acquisition.

On the 9th of December, Mr. Allen exhibited from his retarding-house, two other hybrids; one of which was free from pulp and foxiness, and somewhat resembled Miller's Burgundy. In the other case, Mr. Allen has not dogged the fox.

These results of the past year are a certain proof that we shall soon be a "Grape-growing State," and the end is not yet.

In concluding, will you allow me, Mr. Editor, in expressing my obligations for your favorable comments upon my crop of foreign Grapes, to correct an error in the amount. In the year 1853 my crop was 5,000 pounds, and is but little less this year. I should call myself a poor cultivator, if I had not averaged over 3,000 pounds for the past five years. I state this, because, having large graperies, the amount is no more than might be reasonably expected.

[We are much obliged to Mr. Strong for the information he has communicated in regard to new Grapes. Massachusetts is taking the lead in this matter, and we wish her cultivators that success which their taste and energy so justly merit.

In regard to Mr. Cutter's Grape, we must say, in deference to Mr. Strong's good judgment in such matters, that we entertain no doubt as to their being Isabellas. Here, at Rochester, and indeed, in all localities, there are weeks of difference between the periods of ripening of this Grape in different soils and exposures. Mr. Paine, of Lockport, has for many years ripened Isabellas long before his neighbors, and so uniformly, that many were induced to believe it a distinct sort, and it has been sold as such. Cases of this kind are not rare, as all experienced fruit-growers know; and it is not only so with Grapes, but with other fruits. Mr. Strong may have perhaps seen one vine in his houses ripen its fruit sooner than another of the same variety, without being able to see clearly why. -Ed].