The poisonous gas has also leaked into the air of the cave.

Engersol lurched backward, his lungs filling once more with the poisonous gas.

Attacks on girls' schools using suspected poisonous gas have increased since last year.

Then the alcohol overcame him all in an instant like a poisonous gas.

That fiend Bright has a poisonous gas with him in a pocket cylinder.

She was still suffering from having breathed in the High Keeper's poisonous gas.

Carbon monoxide is a poisonous gas produced when cigarettes are burned.

The plant suffered a leak of a poisonous gas called methyl mercaptan, DuPont said.

Within minutes, the northern part of the town had been engulfed with poisonous gas.

If there is no poisonous gas they can survive for some time, he said.

The planet is a storm-torn ball of poisonous gas-notexactly a great getaway destination.

Take, for example, the use of poisonous gas in warfare.

Succeeded in making a tankful of poisonous gas, hitherto known only to test tubes.

Then a greenish-yellow fog of poisonous gas was released, and soon encompassed the hill.

Carbon dioxide is not a poisonous gas, but it does not support animal life.

That devil Bright invents a new poisonous gas every day.