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The fruits when triturated with a solution of caustic potash evolve a most unpleasant odour.

In most of the experiments it was most convenient to use caustic potash.

Whatever sets up the electric disturbance, whether it be the action of sulphuric acid on zinc, or caustic potash on iron, etc., is called electromotive force, generally abbreviated E.M.F.

But it contained a highly toxic concentration of potassium hydroxide, or caustic potash, and two teaspoons of it would have been a fatal dose.

Lime deposits may be eliminated, or the salts may be precipitated in the form of non-adhering slimes, by introducing regularly a small amount of caustic potash or soda into the feed-water.