A reward of £200 was offered by the Postmaster-General, and a further reward of £1000 by certain insurance companies who had insured the valuable letters, for the conviction of the delinquents and the recovery of the stolen property; but the robbery remains to this day one of those which have baffled the skill of the Metropolitan police and the officers of the Post-office to unravel or to bring home to the evil-doers. _Cape Diamond Robbery._ The greater portion of the diamonds found in Griqualand West, in South Africa, are sent weekly to England through the Post-office, made up in packets, which are forwarded as registered letters--the value of these remittances being collectively from £60,000 to £100,000. In April 1880, the sailing of the mail-steamer from Cape Town having been delayed until the day after the arrival of the up-country mails, the bag containing the registered correspondence was left in the registered-letter office of the Cape Town Post-office; not, however, locked up in the safe, where it ought to have been, but carelessly left underneath one of the tables. During the night the office was broken into, and the whole of the diamonds stolen, valued at £60,000. Who the robbers were appears never to have been discovered, and they have doubtless since been in the enjoyment of the fruits of their villainous enterprise. As it is the practice of people in the diamond trade to insure packets of diamonds sent by them, the senders did not suffer anything beyond inconvenience by this robbery; but the insurance companies were involved in the loss, and had to pay claims amounting to £60,000. The following is an account of a robbery attempted upon a postman in London in July 1847, as officially reported at the time:-- "An attempt was this morning made to murder or seriously to maim Bradley, the Lombard Street letter-carrier, with a view of obtaining possession of the letters for his district. He was passing through Mitre Court, a narrow passage between Wood Street and Milk Street, when the gate of the Court was closed and locked behind him with a skeleton key by, it is believed, three men, who followed him a few yards farther on in the passage. On Bradley getting to a wider part of the Court, one of them felled him to the ground by a heavy blow from a life-preserver; he attempted to rise, but was again knocked down in a similar manner. He then felt that they tried to force from him his letter-bags, but fortunately the mouths of them were, for security, twisted round his arm. They continued their blows; but Bradley retained sufficient consciousness to call out 'Murder!' so as to be heard by some of the porters in the adjoining warehouses, who ran to see what was the matter, but unluckily the villains escaped. Poor Bradley is most seriously injured--so much so that he may be considered in some danger."