pneumatic trough

American  

noun

Chemistry.

1. a trough filled with liquid, especially water, for collecting gases in bell jars or the like by displacement.

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pneumatic trough British  

noun

1. chem a shallow dishlike vessel filled with a liquid, usually water, and used in collecting gases by displacement of liquid from a filled jar held with its open end under the surface of the liquid

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Etymology

Origin of pneumatic trough

First recorded in 1820–30

Example Sentences

See Examples For:

pneumatic trough

He stared, laughed, then walked away to his pneumatic trough.

From Cynthia Wakeham's Money by Anna Katharine Green

Dr. Paris refers to the case of a chemist of his acquaintance, who was suddenly deprived of sense as he stood over a pneumatic trough in which he was collecting this gas.

From Popular Education For the use of Parents and Teachers, and for Young Persons of Both Sexes by Ira Mayhew

Priestley's pneumatic trough is at this day to be found in every laboratory; it is extremely simple and extremely perfect.

From Heroes of Science Chemists by M. M. Pattison (Matthew Moncrieff Pattison) Muir

It was withdrawn at the pneumatic trough from the gas through the water, heated red-hot by the spirit-lamp and blowpipe, and then returned when cold into the same portion of gas.

From Experimental Researches in Electricity, Volume 1 by Michael Faraday

I was baffled, exasperated, at my wits' end; all the more that I saw his eye roaming impatiently towards the pneumatic trough where some hydrogen gas was collecting for use.

From Cynthia Wakeham's Money by Anna Katharine Green