1897, with the assistance of Sub-Inspectors Azizul Haque and Hemchandra Bose, Henry developed a system of fingerprint classification enabling fingerprint records to be organised and searched with relative ease. It was Haque who was primarily responsible for developing a mathematical formula to supplement Henry's idea of sorting in 1,024 pigeon holes based on fingerprint patterns. Years later, both Haque and Bose, on Henry's recommendation, received recognition by the British Government for their contribution to the development of fingerprint classification. In 1897, the Government of India published Henry's monograph, Classification and Uses of Fingerprints. The Henry Classification System quickly caught on with other police forces, and in July 1897 Victor Bruce, 9th Earl of Elgin, the Governor-General of India, decreed that fingerprinting should be made an official policy of the British Raj. This classification system was developed to facilitate orderly storage and faster search of fingerprint cards, called ten print cards. It was used when the ten print cards were catalogued and searched manually and not digitally. Each ten print card was tagged with attributes that can vary from 1/1 to 32/32. In 1899, the use of fingerprint experts in court was recognised by the Indian Evidence Act. In 1898, he was made a Companion of the Star of India (CSI). In 1900, Henry was seconded to South Africa to organise the civil police in Pretoria and Johannesburg. In the same year, while on leave in London, Henry spoke before the Home Office Belper Committee on the identification of criminals on the merits of Bertillonage and fingerprinting. Assistant Commissioner (Crime) In 1901, Henry was recalled to Britain to take up the office of Assistant Commissioner (Crime) at Scotland Yard, in charge of the Criminal Investigation Department (CID). On 1 July 1901, Henry established the Metropolitan Police Fingerprint Bureau, Britain's first. Its primary purpose was originally not to assist in identifying criminals, but to prevent criminals from concealing previous convictions from the police, courts and prisons. However, it was used to ensure the conviction of burglar Harry Jackson in 1902 and soon caught on with CID. This usage was later cemented when fingerprint evidence was used to secure the convictions of Alfred and Albert Stratton for murder in 1905. Henry introduced other innovations as well. He bought the first typewriters to be used in Scotland Yard outside the Registry, replacing the laborious hand copying of the clerks. In 1902, he ran a