Dr. Cyril Burt

Mr. Cyril Burt, psychologist to the London County Council, measuring the speed of the thought of a child with a chronoscope to two-hundredths of a second.

Sir Cyril Burt working

Mr. Cyril Burt, psychologist to the London County Council, measuring the speed of the thought of a child with a chronoscope to two-hundredths of a second.