What is MENISCUS? The departure from a flat surface where a liquid meets a solid, due to surface tension. The effect can be seen clearly through the wall of a glass tube. The surface of water in air rises up the wall of the tube, while that of mercury is depressed, SIGHT-FEED LUBRICATOR.
An abandoned mud-covered scooter is found during the draining of the Canal Saint-Martin in Paris, France Charles Platiau/Reuters
Paris: Canal Saint-Martin clean-up in pictures as bikes, chairs and trolleys emerge from sludge The last time the canal was drained, those in charge of the cleaning removed 40 tonnes of waste, including at least one car.