rock oil

It was called rock oil and was hawked about the streets as a sure cure for rheumatism.

It has in one part a spring of petroleum or rock oil, and one of its mountains is a volcano.

That's his centre-bit, and this is the bottle of rock-oil he's supposed to have kept dipping it in to prevent making a noise.

Girl in Tranquilla convent that nun told me liked to smell rock oil.

It can only be preserved in naphtha, rock oil, or some other fluid hydrocarbon.