reby the commerce of Amsterdam reaches the ocean, is wide and deep enough to float two passing frigates.
It was built 1819-25, at a cost of $4,250,000. A still deeper and wider one is now in progress.
Previous to the invention of canal-locks by tie, by DeWitt Clinton, is the longest, 363 miles, with 84 locks.
The Erie Canal was commenced in 1817, and completed in 1825.
The main line leading from Albany, on the Hudson, to Buffalo, on Lake Erie, measures 363 miles in length, and cost aboutto the infusion.
An early arrangement of this kind is the Bencini patent, September 27, 1838.
See also Martell's patent, 1825; Rowland, 1844; Waite and Sener, Old Dominion, 1856.
These have lids or upper chambers to condense the steam.
3. Coffecliffe, 1802– 1804.
Power-loom, Horrocks, 1803-1813.
Mule, Samuel Crompton, 1774-1779.
Self-acting mule, Roberts, 1825.
See cotton, flax, wool, hemp, silk, etc., appliances, p. 631.
A cotton-factory cited by Ure has machines in the fol