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
How To Drain Surface Water. A French drain is ideal for carrying away surface water which builds up around walls, on driveways or in waterlogged areas of a lawn or garden. It is a relatively simple and cost effective way of draining land, and it does not require specialist tools or complicated equipment.