mammillary

These geodes, on breaking, often present a mammillary surface.

Summary Narrative of an Exploratory Expedition to the Sources of the Mississippi River, in 1820

Henry Rowe Schoolcraft

These are of a circular and mammillary form: they are strewed thickly, like little islets, approximating to each other.

Remarks on some fossil impressions in the sandstone rocks of Connecticut River

John Collins Warren

It occurs in mammillary rounded masses, with a fibrous structure, and a dull metallic lustre.

Geology

James Geikie

A considerable number of the prehistoric dress-fasteners, known as mammillary fibulæ, have been discovered in Ireland.

Jewellery

H. Clifford Smith,

Locality near Adelaide, now showing gold freely in mammillary and dendroidal form.

Getting Gold

J. C. F. Johnson