I fear that, to some readers, these statistics may be rather tedious. They are necessary, however, to enable us fully to understand the position in which this important branch of the manufactures of the country, and the large population dependent upon it, have been placed by the intelligence brought by another later mail from the United States, which arrived in the Mersey on the morning of the 16th ult. I have stated that the estimates formed of the probable crop in America, at the beginning of the year, varied from 2,250,000 to 2,300,000 bales. These had been reduced, up to the arrival of the steamer in the first week of April, to 2,100,000 bales. With this progressive decline going on in the amount of the crop, as estimated by competent judges upon the spot, and with the fact of decreased receipts at the American ports before their eyes, the spinners of this country have, with few exceptions, resolutely refused to give credit to the representations made to them, and kept further exhausting their stocks on hand, or buying only to supply their immediate wants. The arrival of the Niagara, however, has put the question at rest, and not only confirmed the statements as to the crop being a short one, but established the fact that it is likely to be much shorter than was by anybody anticipated. The following is the startling disclosure made by Mr T. J. Stewart of New York, one of the best authorities in the United States, upon the subject, in his circular of the 2d ult.:— “The crop proves to be a short one—and if measured by the ability of the world to consume, the shortest one since ’41–’42. The falling off in the receipts regularly exceeds the progressive estimate I made some time since, and on which I made up my table of 2,100,000 bales. It will close _under two millions of bales_. How far below, I cannot at present say, but the interior of the country is exhausted of supplies to so great a degree, that it is evident that such a figure is totally impracticable.” The decrease in the stocks arrived at the ports of America is put down by him now at 470,000 bales. Of this very insufficient crop of less than 2,000,000 bales—that of the preceding year, I may remark, was 2,728,000—Mr Stewart reminds us that _America will require above 600,000 bales to supply her own mills, or nearly two-fifths of the total quantity consumed in Great Britain last year_. This, of itself, is a somewhat startling fact, and proves the rapid strides which America is making toward depriving this country of its manufacturing pre-eminence.