times when the water had risen, and was falling again for some days after; the highest of these had a depth of 13 feet (5th January, 1790), the lowest 4 feet, and the mean of the whole of these floods is 7½ feet. In the months of February there were two of these overflowings, one of which (11th February, 1795) followed a frost and continued for five successive days: nineteen floods, the two highest of which were equal (17th and 20th February, 1799) to 12 feet. THE WITHAM. On the Witham, for a distance of thirty miles, between Boston and Lincoln, the river is practically a canal. The tide is stopped by a sluice at Boston, and a weir and locks had to be constructed at Bardney and Lincoln. The inland water is held up to a constant height on the sill of this sluice by penstocks, for the purposes of the navigation. The navigation having been taken over by the Great Northern Railway Company, the works are maintained in efficient condition; but the obligation imposed by the original Act of holding up the water seriously affects the drainage. The river Slea, from Sleaford to the Witham, was made into a canal in 1792. The navigation on this river having almost entirely ceased, the company was dissolved by an Act of Parliament. The Bane, another affluent of the Witham, was also canalised, forming a navigation from the Witham to the town of Horncastle; but the dues obtained are insufficient to maintain the works in proper order. THE NENE AND OUSE. On the Nene, which is canalised from Peterborough to Northampton, the navigation is reduced to a few barges. The constant floods on this river are ascribed in a great measure to the defective condition of the works. The proprietors of the navigation, on whom was cast the duty of maintaining the river, no longer have the funds, and there is nobody to take their place. The same thing has occurred on the Ouse between Earith and Bedford.