From early dawn to midnight I bent over the test-tube and the furnace.
Pour off the water, add more water, and place in a test-tube.
Place a few drops in a test-tube, and heat cautiously over a spirit-lamp, and when it boils remove, and inhale by the nose.
But it will be the test-tube and not the cogwheel that will make the money.
I top the test-tube with another tube, the width of the neck of a claret bottle.
The test-tube with the white of egg showed me a similar exodus.
If instead of a test-tube a bottle had been taken, the result would have been the same.
With a dropper he sucked up a bit of the liquid from the test-tube.
In other words, he has not rendered them in terms of the test-tube.
The doctor was fumbling with a test-tube, from which some heavy fumes were issuing.