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Hermes was still in vacuo, so we didn't have to cycle the airlock.

Steam has taken the place of fires at the boiling stations, and boiling in vacuo has been as fully adopted in Queensland as in other parts of the sugar-producing world.

That a vast amount of radiant heat rushes through a cloud is clearly shown by exposing a thermometer with black bulb in vacuo.

This experiment was intended, like the rubbing of the blocks of ice in vacuo by Davy, to meet the objection that the heat developed by friction was due to the action of the air.

The specific gravity evidently amounts in itself to nothing, being as air in air, and as vacuum in vacuo.