334 



ANNUAL OF SCIENTIFIC DISCOVERY. 



The comparative quantity manufactured in 1852-3, and in 1851-2, 

 south of Virginia, is as follows : 



North Carolina, 



South Carolina, 



Georgia, . 



Alabama, 



Tennessee, 



On the Ohio, &c., 



Total to Sept. 1, 90,000 



Total to Sept. 1, '51, 

 Total to Sept. 1, '50, 



Bales. 



60.000 

 107,500 



75.000 bales. 



Total to Sept. 1, '49, 

 Total to Sept. 1, : 48, 



Bales. 



110,000 

 75,000 



To which, if we add the stocks in the interior towns, &c., the quan- 

 tity burnt in the interior, and that lost on its way to market, to the 

 crop as given above, received at the shipping ports, the aggregate will 

 show very nearly the amount raised in the United States the past sea- 

 son say, in round numbers, 3,360,000 bales, against 3,100,000 for 

 the year"l851-52, and 2,450,000 for the year before. 



The amount of cotton exported to foreign ports, during the years 

 1852 and '53, ending Sept, 1st, was as follows : 1852, 2,443,103 bales ; 

 1853, 2,526,545 bales; increase, 83,442. The amount of cotton burnt 

 by fires in the Atlantic towns and cities for 1852, was 6,025 bales ; for 

 1853, 20,861 bales. 



CURIOUS FRESH WATER PLANT. 



A recent number of the Edinburgh Journal contains a description 

 of a new and singular fresh water plant, which has recently appeared 

 in the inland waters of Great Britain, filling her canals, lakes, and 

 streams, and threatening, unless a remedy be speedily discovered, to in- 

 terfere seriously with, perhaps to destroy, all or most of her facilities 

 for inland navigation and drainage. This terrible foe is a species of 

 aquatic weed, the first specimen of which was discovered in the year 

 1842, in the lake of Dunse Castle, Berwickshire, Scotland. The appear- 

 ance of the little vegetable stranger excited considerable interest among 

 botanists, and the discovery was duly noted in various scientific publica- 

 tions ; specimens were sent to a few individuals, and then it was for- 

 gotten. But the plant was of too aspiring a character to live and blush 

 unseen in British waters. In 1847, it was found growing in great abun- 

 dance, and closely matted together, in the reservoir adjoining the Fox- 

 ton Locks, on the canal in Leicestershire. This discovery induced a 

 re-examination of the original plant, when it was found that the long 

 neglected water-weed had travelled out of the lake, and was making its 

 way down the Whiteadder to join the Tweed. In the same season it 

 was found in great profusion in a tributary of the Trent, in Notting- 

 hamshire, and it was also discovered to exist in " dense masses, and 

 great abundance " in the Watford Locks, Northamptonshire. In 1849, 



