a. (UN-1 7 b.)

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1877.  R. Bruce, A Voice from the Australian Bush, 55.

          And there wis thim as said that cottage thatch
Was as unburnable as stone or brick,
For they had thried it wid a lighted shtick,
And ’twouldn’t catch.

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1881.  Harper’s Weekly, XXV. 455. There is scarcely a town that does not contain his unburnable chests [= safes].

3