1843 1 365 We consider the application of controlling experiments, by effecting combustion by the aid of a stream of oxygen, as highly necessary for the purpose.
1920 4 146 A controlling experiment did not show this rise. The same result occurred with the removal of the pancreas.
2005 S. Gieser 79 Positivism sets up those sciences that use observation and controlling experiments as an ideal for all other sciences.