Professor "Terra-Culture" Comstock thought, or pretended to think, that he made a great discovery in the art of culture, and modestly demanded from the State, or the nation several thousands of dollars, as a reward. For a long time he made himself and every one he met unhappy about it, until at length the New York State Agricultural Society appointed a committee to examine into the thing. We do not know that the committee reported, but we know that the chairman of it regarded the whole matter as sheer nonsense; - and so it was. The State would do nothing for the Professor, and bo he took to lecturing; and the last we heard of him, he was in Wisconsin. Poor Comstook 1 people hereabout said he was mad; and it may be he was, and is.

Our friend Isaac HildReth, formerly of Geneva, but who now hails from a romantiC spot on Seneca Lake called "Big Stream Point" has also made a discovery, he says, and we do not doubt it, for he is a genius, and has always been discovering something during the last ten or twelve years that we have known him. We have been advised by the following circular:

"I have made an important discovery in growing Pear and Plam stocks, by which method all nursery-men may grow their own stocks from seed, without risk of failure from the effects of leaf-blight I am willing, and propose to impart this important secret to those who wish to avail themselves of the benefit of this discovery. Should yon think proper, I will give you the details, on the promise from you of ten dollars; payable when the matter is successfully proved by practicable demonstration, one year from this date. L Hildreth. - Big Stream Point, N. Y".

Now this is a very reasonable and modest announcement, more so than any of the sort we have seen. A very little information on the subject of growing seedlings would be worth $10, and HildReth, we are told, has succeeded remarkably well. But if we were in his place, we would grow the stocks and sell them, instead of selling a secret which may turn out to be no secret at all.