The Historical Records of the Survey of India up to 1861 reveal that fever stalked the survey team, and it was said that scarcely 1 in 70 returned to England.
Historical Records of the Survey of India hingga tahun 1861 mengungkapkan bahwa demam selalu mengintai tim pengukur, dan konon hanya 1 dari 70 juru ukur tanah yang kembali ke Inggris.