Scotland Yard

isation that plucks the murderer from his fancied security at the ends of the earth, that prevents the drunkard from making himself a nuisance to the public, that prevents the defective motor-bus from becoming a danger or an annoyance to the community.

Inside the building of red brick and grey stone that faces the river, and a stone's throw from the Houses of Parliament, there are men who sit planning, planning, planning. The problems of the peace of London change from day to day, from hour to hour, almost from minute to minute. Every emergency must be met, instantly, as it arises--often by diplomacy, sometimes by force. A hundred men must be thrown here, a thousand there, and trained detectives picked for special work. With swift, smooth precision, the well-oiled machinery works, and we, who only see the results, never guess at the disaster that might have befallen if a sudden strain had thrown things out of gear.

In the tangle of departments and sub-departments, bewildering to the casual obser