...A wad of cotton or other absorbent material is saturated withthe liquid and pushed into the burrow, the opening being packed withsoil to prevent escape of the gas... 
David Lantz 「Methods of Destroying Rats」
...It would appear, then, that all stars are suns with continuous spectra, and theclasses are differentiated by the character of the absorbent vapours of theiratmospheres...
George Forbes 「History of Astronomy」
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