marl

The flint hatchets found at St. Acheul, France, were obtained from a gravel bed which lay below twelve feet of sand and marl.

It was a bluff or butte of limestone which innumerable years had converted into marl, and for the most part into earth.

Half an hour later we crossed the tracks at Verbena and turned into a broad marl road.

Why do we not then persuade husbandmen that they should not till land, help it with marl, lime, and compost?

A deposit of marl stretches along nearly the whole of its shores and of tolerable breadth.