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Surgeons told him the steriliser used on his skin had been ignited by an electrical instrument which generates heat for a process called diathermy.

"The thing we use most in theatre is a surgical diathermy machine, which basically stops you from bleeding to death," he said.

The high-frequency apparatus already referred to in connection with diathermy is valuable for the treatment of rheumatism in its earlier stages, and for the stimulation of the scalp in hair treatment.

He left, returning a few minutes later with a portable apparatus somewhat resembling its progenitor, the diathermy generator.

Reduction of tension by means of various mechanical measures, notably massage, vibration massage and suction massage, and by means of electricity and diathermy.