During his tenancy of office the system adopted at Shanghai was applied to the other treaty ports, so that when on Mr Lay's resignation Mr Hart was appointed inspector-general of foreign customs, he found himself at the head of an organization which collected a revenue of upwards of eight million taels per annum at fourteen treaty ports.
From the date when Mr Hart took up his duties at Peking, in 1863, he unceasingly devoted the whole of his energies to the work of the department, with the result that the revenue grew from upwards of eight million taels to nearly twenty-seven million, collected at the thirty-two treaty ports, and the customs staff, which in 1864 numbered 200, reached in 1901 a total of 57 0 4.
A violent rebellion is mentioned in 1788, put down only after the loss, it is said, of ioo,000 men by disease and sword, and the expenditure of 2,000,000 taels of silver.
In 1907 the imports amounted to 79,500,000 taels (a tael in 1907 averaged 3s.
Foreign imports 61,200,000, native imports 18,317,000 taels; the exports in the same year amounted to 17,253,000.