Apart from these papers, which are purely confidential, there are other papers issued. There is the "Black List" issued to publicans, with portraits and descriptions of persons to whom it is an offence to supply liquor, and the "Pawnbrokers' List and Cycle List," which has to be sent to those persons to whom stolen property might be offered for pledge or sale. These latter are distributed from each station by hand. It is at the Statistical Department that many of the riddles are fired. It has the record of each man in its files, knows his official character, his medical history, and so on. Now and again some one wants to know how many street accidents occurred in London during a particular week. The department produces a carefully prepared table showing the number and details in each case. Figures may be unattractive things, yet at any moment the statistics collected in that quiet, methodical office may have a direct effect on any one of London's teeming millions. When the order went forth that all cyclists in London should carry rear lights it was probably a string of figures put together in that department which was responsible--figures which showed the number of accidents that had been caused in the absence of any such precaution. It keeps track of everything done by the police, individually and collectively. Ask how many charges were preferred by the police in one year. You will learn at once that there were 133,000, that 26,000 summonses were issued by police officers, and 63,000 were served on behalf of private persons. There are about three hundred mounted police in the force, and these, as a whole, come under the control of the department, although at ordinary times they are attached to divisions. They used to be attached to the outer divisions, but it was found that they were too far away when an emergency arose, for, after all, the mounted man is of most use in controlling unruly crowds. So now they are with the inner divisions, within easy reach of the most crowded thoroughfares when needed. All the men in this branch of the service have been thoroughly trained in horsemanship, and those who have seen them at work on their adroit horses, keeping back a mass of pushing, struggling people, or dexterously dispersing a threatening crowd, know their worth as maintainers of order. Both the Executive and Statistical Departments are concerned with reports which are the basis of all discipline and organisation in the Metropolitan Police. The first--"The Morning Report"--is compiled by the superintendents of divisions, and passed and commented upon by the Chief Constables in charge of districts.