The culture of the foreign grape under glass has become such a palpable reality, and on account of its easy accomplishment is of so much practical importance, that almost every one who has indulged in the pursuit conceives himself privileged to give his experience and opinions. This practice of course leads to good results, although it is sometimes a little difficult to reconcile the rather contradictory views and assertions of some, who, like myself, have had but little experience, and do not, in reality, know much about the matter.

There is one point, however, on which the grape-growing community are nearly unanimous; every one desires a cheap grapery, whether he wishes to erect a small and plain structure, or a large and ornamental one - conditions which are sometimes discovered to have been somewhat antagonistic.

The form of the house has been a subject of much discussion, and one upon which there exists a great diversity of opinion. Your correspondent, Mr. Saunders, I observe is inclined to take ground in favor of right-lined roofs, stating his belief in the doctrine that a curvilinear roof does not "in itself possess any important advantages," and that "the gain of more light and less opacity," which he is willing to admit, "is the only superiority which such houses possess.

For myself, 1 am strongly in favor of curvilinear houses, being satisfied, from my experience and observations, that they not only do possess " important advantages" over right-lined houses, but are not so much more expensive as Mr. Saunders seems to believe.

The first point which naturally occurs is the superior beauty of an arched roof, either for a lean-to or span-roofed house, which will hardly be contested. The next is the much greater amount of room obtained, both in the length of the trellis, and in the house itself, it being quite unnecessary to build a front wall of five or six feet in height, in order to permit a near approach to the vines, without thrusting one's head into the foliage, or through the glass. The gain of one or two feet in length of rafter, with a given amount of ground surface, is certainly important, and in a large house, will afford room for a sufficient number of additional bunches to make a material difference in the weight of the crop.

If one wishes cheapness to control every other consideration, it is possible to grow very decent grapes at a very slight expense, in a roughly built house of boards, such as have been figured in some of your former volumes. Indeed, a friend of mine succeeded in obtaining some quite respectable Black Hamburghs from a vine which was only protected by a hot-bed frame, which had a sufficient quantity of glass broken out to afford ventilation. I question if this could be done however with many foreign varieties, - perhaps the Chasselas de Fontainebleau and some of its congeners might succeed.

My experience so far leads me to believe that I could attend two houses, planted with the two sorts above named alone, with the same amount of time, labor, and expense which it would be necessary to bestow upon one house (all of course being of equal size), planted in the usual manner, with a dozen or more varieties; consequently, were I growing for market, I should depend upon these two sorts almost, if not quite exclusively. Perhaps Wilrnot's Black Hamburgh and some still later sort might be admitted in order to keep up a succession.

While upon the subject I should like to be positively resolved whether there is a Royal Muscadine, which is distinct from and superior to the Chasselas de Fontainebleau?

It is contended by some that there is such a grape. Although I do not quite understand what are its distinctive and superior qualities, I suppose that there is little if any doubt, that what are usually sold for Chasselas de Fontainebleau, Golden Chasselas, and Royal Muscadine, (together with two or three other names,) are identically the same. In some instances they are propagated as one variety, and the different names affixed to please the taste of those who order them as such.

If some of your correspondents who possess the so-called "genuine" Royal Muscadine, will give an account of its peculiarities, and a sketch of its history, if possible, I have no doubt that it would tend to clear away some of the confusion which now seems to exist respecting it I am somewhat disappointed in the Black St. Peter's, although I acknowledge that I have scarcely given it a fair trial. It ripened last season under peculiarly adverse circumstances, (but to which most of the others were likewise subjected,) and was indubitably the most indifferent grape in my house. Perhaps, owing to the coolness of the season, and the late period of its ripening, it failed to acquire its proper flavor; and I hope that it will retrieve its character this year. If it proves no better than before, I shall be strongly tempted to cut down and graft my two fine plants, (now nearly of full size,) however barbarous it may appear. The Grizzly Fronti-gnan pleases me much, and is a finer fruit than I anticipated. Its peculiar soft pinkish color is not so inviting as a deep black or rich amber, but desirable for its oddity, and in conjunction with its delightful flavor, by no means displeasing.

Does any one, I wonder, grow the Chasselas Musque, without its cracking? If it is done, I would like to be possessed of the method by which it can be accomplished, for I admit that it beats me. If it were not so exquisite in flavor, I would no longer be annoyed by it; but it is really worth some expenditure of time and temper to ripen it, even in a cracked state.