There was a time when the apostles of the infernal machine and the bomb sought to terrify our own Government, and then the tension at the Yard was terrible. Spies and informers there were who brought news of many a plot and prevented its accomplishment; but every now and then the dastardly design was carried out. That time is happily passed, and the "Reds" only cause the heads of the police extra anxiety when some foreign potentate is visiting our King and driving openly through the streets of London. On these occasions every foreign anarchist and terrorist known to the police--and I doubt if there is one in our midst who is not--is shadowed. Some of them may get into a house on the line of procession; some of them may mix with the crowd. But wherever they are there is someone at their elbow who is watching every movement, ready at the first hint of danger to act promptly and decisively. When recently the King of Spain drove through the streets of London I stood in the crowd close to a foreign anarchist who makes violent speeches in a certain "Red" club in a back street in Soho. He was so closely wedged in between two stalwart-looking men of the navvy type that when the King of Spain came by he, the anarchist, couldn't have got his hands up to take off his hat had he wanted to do so. The navvies were police officers. On the occasion of the present Tsar's last visit to London as the Cesarewitch the precautions taken were of an extraordinary character. The anarchists and Russian terrorists in London were not only closely watched, but they were prevented from getting close to the line of route or near to the Royal Palaces. The known revolutionaries are easy to deal with. The police have daily information of their movements. The "cranks" are the real terror of the authorities, for you never know what a crank will do. A pale-faced, middle-aged woman in black, caused considerable consternation by attempting to enter St. James's Palace with a suspicious-looking box. She was promptly seized by the police. On the box being opened with every precaution, under the impression that it was an infernal machine, it was found to contain a long steel chain and a letter to the Cesarewitch, calling his attention to the fact that chains of this description were being worn by the Russian Jews in Siberia. The whole thing was harmless enough, but the officials who first saw that box had a very bad moment. On every occasion of the visit of a foreign potentate in London the "information" received is of voluminous character. Some of it is worth serious consideration, but a good deal of it is of the "crank" order, with just enough appearance of sanity in it to cause the authorities considerable trouble and anxiety.