In the act of March 23, 1830, for taking the fifth census, provision is made for ascertaining the number of blind and deaf and dumb, and the returns of age and sex were required with greater fulness than before. The time for commencing the enumeration was changed from August 1 to June 1, and the work was to be completed in six instead of nine months. The return of manufactures required by the two preceding census laws was omitted. The act of March 3, 1839, for the sixth census, differed very slightly from that for the fifth, except that returns were also required of the number of insane and idiotic, the number of Revolutionary pensioners, and of the manufacturing, agricultural and educational statistics. By an amendment adopted February 26, 1840, the time for completing the enumeration was reduced to five months from June 1, and, for the first time provision is made for special supervision of the work by requiring the appointment of a superintending clerk. Thus it appears that down to the taking of the sixth census, in 1840, the chief object aimed at was the enumeration of the population. No effort was made to arrive at, or even approach, by any thorough and scientific process the great facts relating to our material progress and prosperity, or to supervise the publication of such returns as were required. But the report for that year shows a great advance over any preceding one both in quantity and quality of information. The decade then closing was one of great life and movement. The States west of the Alleghanies were rapidly filling up with immigrants, whose arrival was followed by speculations hitherto unknown. Fabulous wealth was speedily followed by utter bankruptcy. The railroad, the steamship and the telegraph foreshadowed the approaching revolution in methods of commerce and communication. A new life was dawning.