3b Stirrings of change abounded in the United States in the 1860s. If the present offered challenge and hard work, the future offered the promise of substantial increases in material well-being along almost every line. Agricultural production was increasing rapidly and innovations were making their presence felt heavily.^ It appears from the returns of the last census, that the ratio of increase of the principal agricultural products of the United States has more than kept pace with the increase of population. Indeed, there appears no reason to doubt the continuance of an abundant supply of all the great staple articles, equal to the necessities of any possible increase of population or national contingency for years to come.(7) Agriculture also was becoming dependent upon machines and upon the manufacturing industries. Future increase depended upon further mechanization and the interdependence of agriculture and manufacturing was coming to be recognized. are considered in the remainder of this chapter. Quan titative changes, which reflect the consequences of changing conditions, are left primarily to Appendix A. ^Figures showing changing agricultural productivity and production after i860 are included in Appendix A. 7 Joseph C. G. Kennedy, Superintendent, U.S. Department of Commerce, Bureau of the Census, Preliminary Report on the Eighth Census, i860 (Washington, D. C.: Government Printing Office, 1862), p. 80.