bluestone

She walked down the bluestone and blacktop driveway and through shadows thrown by the branches of seven leafless oak trees.

The term “Bluestone” in the West of England meant holy stone.

A smooth road of bluestone with a surface like velvet, rarely broken by badly paved or badly worn sections, ran straight south.

Martin, in despair, has taken to horse-doctoring his yaws with bluestone and to blessing the Solomons.

Two people should work together and pour the milk of lime and the bluestone solution together so that the streams mix in pouring.

Sprinkle a little copper sulfate (bluestone) in the flame of a Bunsen burner.