marles

However, a man from Delft, who followed the business of a knickerbocker, or baker of knickers, or clay marles, begged the body of the Oni.

Dutch Fairy Tales for Young Folks William Elliot Griffis 1885

They are most frequent in calcareous strata, from the transition limestones to the highest of the marles.

The American Quarterly Review, No. 17, March 1831 Various 1821

_marles_ which effervesce with aqua fortis, all _animal shells_ and the bodies called _lithophyta_.

Experiments upon magnesia alba, Quicklime, and some other Alcaline Substances Joseph Black 1763