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
The Erie Canal was completed in 1825. At last, New York City was the trading capital of the nation. As the city grew, it made other infrastructural improvements. In 1811, the âCommissionerâs Planâ established an orderly grid of streets and avenues for the undeveloped parts of Manhattan north of Houston Street.