The number of boats passing down the Ohio, laden with would-be settlers and their belongings, speedily became very great. An eye-witness stated that between November 13th and December 22d, of 1785, thirty-nine boats, with an average of ten souls in each, went down the Ohio to the Falls; and there were others which stopped at some of the settlements farther up the river. [Footnote: Draper MSS., _Massachusetts Gazette_, March 13, 1786; letter from Kentucky, December 22, 1785.] As time went on the number of immigrants who adopted this method of travel increased; larger boats were used, and the immigrants took more property with them. In the last half of the year 1787 there passed by Fort Harmar 146 boats, with 3196 souls, 1371 horses, 165 wagons, 191 cattle, 245 sheep, and 24 hogs. [Footnote: Harmar Papers, December 9, 1787.] In the year ending in November, 1788, 967 boats, carrying 18,370 souls, with 7986 horses, 2372 cows, 1110 sheep, and 646 wagons, [Footnote: _Columbian Magazine_, January, 1789. Letter from Fort Harmar, November 26, 1788. By what is evidently a clerical error the time is put down as one month instead of one year.] went down the Ohio. For many years this great river was the main artery through which the fresh blood of the pioneers was pumped into the west. There are no means of procuring similar figures for the number of immigrants who went over the Wilderness Road; but probably there were not half as many as went down the Ohio. Perhaps from ten to twenty thousand people a year came into Kentucky during the period immediately succeeding the close of the Revolution; but the net gain to the population was much less, because there was always a smaller, but almost equally steady, counter-flow of men who, having failed as pioneers, were struggling wearily back toward their deserted eastern homes. Kentucky's Growth.