TY - JOUR AU - Atack,Jeremy AU - Bateman,Fred AU - Margo,Robert A. TI - Capital Deepening in American Manufacturing, 1850-1880 JF - National Bureau of Economic Research Working Paper Series VL - No. 9923 PY - 2003 Y2 - August 2003 UR - http://www.nber.org/papers/w9923 L1 - http://www.nber.org/papers/w9923.pdf N1 - Author contact info: Jeremy Atack Department of Economics Vanderbilt University VU Station B #351819 2301 Vanderbilt Place Nashville, TN 37235-1819 Tel: 615-343-2467 Fax: 615/343-8495 E-Mail: jeremy.atack@vanderbilt.edu Fred Bateman Department of Economics Brooks Hall University of Georgia Athens, GA 30602-6254 E-Mail: fbateman@terry.uga.edu Robert A. Margo Department of Economics Boston University 270 Bay State Road Boston, MA 02215 Tel: 617/353-6819 Fax: 617/343-8495 E-Mail: margora@bu.edu AB - We use establishment-level data to study capital deepening -- increases in the capital-output ratio -- in American manufacturing from 1850 to 1880. In nominal terms, the aggregate capital-output ratio in our samples rose by 30 percent from 1850 to 1880. Growth in real terms was considerably greater -- 70 percent -- because prices of capital goods declined relative to output prices. Cross-sectional regressions suggest that capital deepening was especially importnat in the larger firms and was positively associated with the diffusion of steam-powered machinery. However, even after accounting for shifts over time in such factors, much of the capital deepening remains to be explained. Although capital deepening implies a fall in the average product of capital it does not necessarily imply that rates of return were declining. However, we find strong evidence that returns did decline. We also show that returns were decreasing in firm size, although the data are not sufficiently informative to tell us why it was so. ER -