J. W. Briggs, West Macedon, N, Y, sends us specimens of beardless barley, and will do the same to all who inclose a stamp, New Brighton, Staten Island, Sept. 4, 1856.

J. Jay Smith, Esq. - Dear Sir: Some time ago, a copy of my hook, "The Grape Growers1 Guide," was sent to Dr. Lindley, the editor of the London Gardeners' Chronicle, which he has noticed somewhat favorably, and in that notice he has hit upon, perhaps, the two moat philosophical points, considered in a prospective view, both of which are in connection with mildew on the grape-vine. The first is the recommendation to improve our natives by hybridization with the European kinds, so as to gain the better quality of the latter, and yet retain the hardy constitution of the former* This he entirely agrees with, and advises the Eastern vineyard cultivators to accept as a probable means of extirpating the destructive pest that is now destroying their crops. If we have given to Europe an idea that shall ultimately be successful, we shall be gratified with the service done, and hope, in the mean time, that it may so turn out.

With regard to mildew as it now exists there, and the kind that we have all along been troubled with in out-door culture, it is presumed that both are identical. This the doctor denies in the following language: "In connection with the present subject, it is not a little curious to see how the American gardeners are in a complete state of confusion as to what is the true vine mildew, arising from the attack of oidium. Mr. C. says there are two diseases in the States, one appearing in the form of brown spots, which cat through the leaves; the other like a 'fine and delicate hoary mouldinees.' The first he supposes to be European mildew, while his account shows unmistakably that it is the second. Let us hope that when Mr. Chorlton flees this remark, be will make the American public aware of the mistake." Now, in my description of this first, it is stated that the earliest indications of it are these brown spots, and that "afterwards are seen small white patches of the soft and deli-oate fungus attached to the under side of the leal" Further: "These white patches are the fructification of the parasite." As it appears to me, he has only read the description so far as the first indications are mentioned, and then skips on to the next paragraph, which speaks of the "fine and delicate hoary mouldineas of the second kind." As to this part of the matter, both might have passed by the same words, but I was very exact in trying to explain, so Jar as words could do, the minute differences,and was particular in stating that the first sort "penetrates to the berries by the rhizoma, or spawn, and makes them in appearance like a diseased potato in the first stage of infection;" while the second lives entirely upon the epidermis (which it destroys), procreates simply by the increase of cells laterally, and is found on the upper side of the leal, thus showing that there is a higher organisation in the former than the latter.

It is possible that we may he in error, hut I would say, with all due deference to his superior abilities, that Dr. Lindley has failed to show it. The very sensible article by Mr. J. Fsk Allen, of Massachusetts, on this suhject, in the August number of the Hortioculturist, would seem to contradict the doctor's assertion, for your correspondent there states, that,"in the Agricultural Report of the Patent Office for the year 1963, page 311, there may be found an engraved illustration of this mildew fungus. It appears in a communication to the State Department from Nicholas Pike, Consul of the United States at Oporto. This is a correct representation of the American mildew, and leaves no room for doubt as to the identity of the two species." And farther on: "That in the short space of one day, the under side of the leaf will be covered.'" This illustration I have Been, and agree with Mr. Allen. It is also sustained by the evidence of other close observers, and, although the wording of the communication might have been more minute and scientific, there is sufficient in it to show that there is little or no difference.

Here is certainly evidence that what I have supposed to be European mildew is so, and also, that it is the same which we are troubled with during the months of July and August. If Dr. Lindley had been more comprehensive in his explanation, and noticed the peculiarities with sufficient attention, it is very probable that we should have received some benefit from his remarks; as it is,there is nothing left for us but to think that he did not read the description with sufficient attention. Respectfully yours, . WM. Chorlton.

J. Jay Smith, Esq. - An article is going the rounds (as quoted from the California Farmer), which expresses the opinion that "coffee will he grown in the State of California, for their own consumption, and also for exportation." It is well to put so erroneous an idea at rest, by stating, that in no part of the State of California will the coffee-tree survive the winter. It is among the most sensitive of all trees to cold, and there is no locality in our country where it could be cultivated, except on the extreme point of Florida. It is not cultivated in Mexico, and, owing to the general altitude of that tropical country, it would only survive on a narrow strip of land bordering on each ocean, and in some parts of Yucatan.

WM. R. PRINCE.