Secondly, from the sea by filtration.
"A Narrative of Captivity in Abyssinia With Some Account of the Late Emperor Theodore, His Country and People"
Henry Blanc
If now I allow the steam to enter a large flask containing air from which the dust has been removed by filtration through cotton wool, no cloud is formed in the interior, but instead condensation takes place at the end of the jet, from which large drops fall, and on the cold sides of the flask.
"Liquid Drops and Globules, their Formation and Movements"
Chas. R. Darling
The two lower stories are formed of hewn stones, placed together without the aid of any cement; but the mason work underneath the channel of the third or top story is of rough stones cemented, by which all filtration was prevented.
"The South of France--East Half"
Charles Bertram Black