There were one or more men, termed classmen, attached to each class on the British side, who carried out the orders of the class and district superintendents during the arrangements, and also during the time of the Exhibition. The number of classmen appointed to the thirty divisions of the arrangements during the progress of the building, &c., was fifty-seven; and the number included in the organization for assisting in the classes during the exhibition, was sixty-one of all ranks. Five or six men also assisted on the foreign side, of whom two were attached to the Chinese court. The classmen afforded material help to the exhibitors and their assistants in displaying their property to advantage, and in protecting it.[84] They likewise were often found very useful in giving information to the public, and in conducting individuals through the masses, to those parts of the building which they were the most anxious to visit. Their courteous demeanour and intelligence were rewarded with repeated expressions of thanks and satisfaction, and the exhibitors were desirous to mark, in a substantial form, their appreciation of the services of the classmen, but it was declined on military considerations. Private tokens of respect, however, were frequently presented by some of the superintendents and class assistants to their military subordinates. A party of about forty men came early in the morning during the Exhibition, and superintended a force of boys in sweeping the British side of the building. The arrangement was systematic, simple, and effective. Six hours—from four o’clock in the morning until ten—were dedicated to this purpose. Had it not been for the peculiarity of the structure, the duty of sweeping would have been insurmountable, but fortunately both floors and roof assisted very greatly to carry off much of the dust and dirt.[85] After finishing the service each morning, the detachment was either kept as a reserve, or returned to the barracks. In addition to the above they on several occasions assisted the police in their duties, especially on the opening and closing days; occasionally a few trustworthy non-commissioned officers issued tickets during the arrangements,[86] and some of the privates rung the bells at the time the building closed each day. In assisting the police, corporal George Pearson detected an official personage, holding a lucrative situation at the Exhibition, taking money from the place in which it was deposited. The corporal for a long time watched his proceedings, and making known the case to the superintendent of police, the delinquency of the official was fully proved, and his dismissal from employment forthwith ordered.