Take care not to overfill the kettle by measuring out what is needed to keep costs down.

Nowadays rock groups are the producers of their own massaged, glossy documentaries — Bruce Springsteen has a “written by” credit on this year’s “Road Diary” — where even the revelations are carefully chosen and measured out.

But Caroline Copeland, a senior lecturer in pharmacology and toxicology at King's College London, says the drugs are so strong, it is difficult to measure out a safe dose.

There are differing methods of calculating an earthquake's power, usually measured out of 10 on what are known as seismic magnitude scales.

Katherine Wolf, a doctoral student at the University of California, Berkeley, said she voted ‘no’ on the measure out of concerns it would result in more people being locked up against their will.