Between 1900 and 1910 the value of farm lands _per acre_ in the United States advanced 108.1 per cent.[68] During the eight years beginning with July 1, 1906, the value of land in Greater New York increased something more than one-third; in the principal cities of New Jersey, and in Worcester, Washington, Boston, and Buffalo, somewhat less; in Springfield and Holyoke, considerably more. In the most recent ten years for which figures are available (since 1900 in every case) the land values of Milwaukee, St. Louis and San Francisco averaged only a slight degree of expansion, while those of Kansas City doubled, and those of Houston, Dallas, Los Angeles, and Seattle trebled. To quote Professor Nearing, from whose compilations these estimates have been summarised: "The total extent of the increase in American city land values may be hinted at rather than stated with any certainty. The scattering instances in which land and improvements are separately assessed led to the conclusion that in a large, well-established city, growing at approximately the same rate as the other portions of the United States, the land value is doubling in from ten to twenty-five years. In the new, rapidly growing city of the middle and far West and in some of the smaller cities of the East, the ratio of increase in land values is far greater, amounting to two-fold or even three-fold in a decade. In a few instances the rate of increase is much smaller, and in one case, Jersey City, land values over a period of seven years have actually decreased.... Nevertheless, the few available long range figures indicate a widespread and considerable increase in American city land values."[69] The rise in the value of timber lands during the last thirty years has been, in the words of the federal investigators, "enormous." For the ten-year period ending in 1908, "the value of a given piece of southern pine taken at random is likely to have increased in any ratio from three-fold to ten-fold." About the same ratio of increase obtained in the Pacific Northwest, and a somewhat smaller increase in the region of the Great Lakes.[70] While a considerable decline has taken place since 1908, it is only temporary; for the demand for timber is notoriously increasing several times as fast as the supply.