drummond light

from The Century Dictionary.

• noun Same as calcium light (which see, under calcium).

from the GNU version of the Collaborative International Dictionary of English.

• A very intense light, produced by turning two streams of gas, one oxygen and the other hydrogen, or coal gas, in a state of ignition, upon a ball of lime; or a stream of oxygen gas through a flame of alcohol upon a ball or disk of lime; -- called also oxycalcium light, or lime light.