It quintupled in the next five-yearly period, till the end of 1840,;when the total length of miles of railway in the kingdom had come to be 1435, built at a cost of £41,391,634, as represented by the paid-up capital of the various companies.
The population of Leipzig was quintupled within the 19th century, rising from 31,887 in 1801 to 153,988 in 1881, to 45'5,089 in 1900 and to 502,570 in 1905.