Dear Sir, - Having noticed an article in the December number headed "More about Boilers" I wish to state a few facts in reply. Having seen the boiler manufactured by Messrs. Weathered and Cherevoy in successful operation, and giving great satisfaction, in the extensive orchard-houses of the Hon. W. B. Lawrence, Newport, Rhode Island, and being on friendly and intimate terms with James H. Park, I will state that I called upon Mr. Park at his green-house, in the latter part of January last, and in conversation with him in relation to his heating apparatus, he stated to me it had given him perfect satisfaction; that it heated his houses well with a comparatively small amount of fuel; and in his opinion was the best heating apparatus in use. He recommended it so strongly that I advised my employer to have one of Weathered & Cherevoy's boilers put in his forcing-house, which is one hundred feet long by fourteen feet wide. After it was put in it gave us great satisfaction; so much so, that we made a second contract with them to put one in a green-house forty-two feet in length and twenty feet wide, and a propagating house twenty feet by eleven feet. This has also given good satisfaction.

There are also ten other boilers of Weathered & Cherevoy's manufacture, within a few miles of where I am employed, and so far as I can learn, in conversation with the gardeners who have them in charge, they are perfectly satisfied with them. As the article in question appears to have been written for the purpose of injuring the well-earned reputation of Messrs. Weathered & Cherevoy, I am constrained to differ with Mr. Park, and add my testimony in favor of these gentlemen, being a friend of truth and fair play.

I am yours respectfully, Mark Wightman, Gardener to Alfred Wagstaff, M. D., Babylon, L. I.

[There is a mistake somewhere in relation to this matter. Mr. Park spoke so confidently that we supposed our correspondent "B." must have referred to some other party. Since he volunteered an impeachment, we must in fairness make room for a response. - Ed].

How To The Editor Or The Horticulturist #1

Dear Sir, - In noticing, at your request, Mr. Park's production in December No. of the Horticulturist, I do not think it necessary to state whether Mr. Park is, or is not, the "very skillful gardener1' referred to in my communication on page 338 of Horticulturist of July last Mr. Park says he is the man; but he insists that my statement does not answer the description of his house; nor the quantity of coal he used; nor the power of his heating apparatus; nor the temperature he kept up; nor the labor and care he found necessary to bestow on the whole concern; therefore, on his own showing, he is not the very skillful gardener I refer to. But this I will say; I will prove to a jury by living witnesses all I said on the subject, and if Mr. Park persists in denying it, he only shows his desire to impugn the honest truth.

The person I referred to, among other things, told me he did not use more than eight tons of coal in a No. 4 boiler. Mr. Park says he had "three other fires," meaning four altogether, which would be about four tons-to each fire; if that be all the coal he burned in his heating apparatus, for the time stated, it is not very surprising that he could not raise the temperature of his house to a white heat; his closeness is closer than I thought it was.

I have in use a heating apparatus made by Weathered & Cberevoy, consisting of a No. 5 boiler, attached to nine hundred and thirty-seven feet of three-inch pipe; it burns a ton of coal a week, and I am willing to supply it at that rate until spring appears; but it heats a range of four houses, two hundred feet in length, of an L shape, with the boiler in the angle, and so arranged by cut-offs that I can heat one, or the entire range, at any time; and this is sufficient to satisfy me of the efficiency of any heating apparatus manufactured by Weathered & Cherevoy.

But there is a well-known fact affecting Mr. Park's ability to manage a hot-water apparatus, which, in justice to the party he maligns, ought to be told, and it is this:. In December, 1859, Mr. Park went from home, and left "my man" in charge of his heating apparatus; and on his return he found the pipes quite cold and the boiler red-hot; and instead of letting down the fire, he quickly filled the boiler with cold water, and the boiler burst, and could not help it. This fact proves three things: first, Mr. Park is not a "very skillful gardener;" second, he does not know how to use a hot-water apparatus; third, not knowing how to use it, he can not obtain its best result B., of Brooklyn.

[We erased the concluding paragraph of the above after the matter was in type, deeming it somewhat out of place, except over the full name of " B." It seems strange to us that Mr. Park should have made the statement he did, without some reason for it All the public want to know are the facts connected with the working of the boilers, divested of all personal considerations whatever. - Ed].