Most of the trade of Brielle was diverted to Hellevoetsluis by the cutting of the Voornsche Canal in 1829, but it still has some business in corn and fodder, as well as a few factories.
The method of working is for the pole to be swung out behind a number of wagons; one engine is then started and with its pole pushes the wagons in front of it until their speed is sufficient to carry them over the points, where they are diverted into any desired siding.
It was not a new religion that took root; older tendencies were diverted into new paths, the existing material was shaped to new ends.
Of the town the Bied plunged into a deep chasm, on the steep rock face of which were formerly the subterranean mills of the Col des Roches, situated one above another; but the stream is now diverted by the above-mentioned tunnel, while another serves the railway line from Le Locle to Morteau in France (8 m.).
As the excavation of the valley proceeded, the level of the stream was lowered and its course diverted; the cave consequently became drier and was far more frequently inhabited by predatory animals.