100. Model of Ox-Powered Sugar Cane Mill, 1925. USNM 200380; 1954. Model of a mill of a type used in Puerto Rico as early as 1523. It took ten men and four yoke of oxen to operate the mill, which could crush about four tons of cane in a 12-hour day. This type of mill extracted about 40 to 45 percent syrup based on the weight of the cane, compared to 80 to 85 percent extracted by modern mills. Gift of Daniel Thompson, Petersburg, Virginia. 101. Model of Water-Lifting Wheel, 1884. USNM 200380; 1954. A model of a wind-driven waterwheel used for raising water into the evaporating beds in salt works. This type of device lifted water from the ocean in Puerto Rico. Gift of Daniel Thompson, Petersburg, Virginia. 102. Model of Grist Mill, 1883. USNM 200380; 1954. This model of a water-powered grist mill resembles those used throughout America in the 19th century before the discovery of the gradual reduction process and the consequent centralization of the milling industry. This particular mill, known to have operated from 1883 to 1940, ground corn in Puerto Rico. Gift of Daniel Thompson, Petersburg, Virginia. 103. Farm Copybook, about 1840. USNM 209042; 1955. Wells Forbes, who had a farm near Alexandria, Virginia, kept this book for about a year in the 1840s. Gift of Bessie W. Palm, Washington, D. C. 104. Grain Cradle, about 1900. USNM 210597, 1956. Grain cradle used before 1900. Gift of Jennie Sabrosky, Sturgis, Michigan. 105. Model of Hussey Reaper, 1833. USNM 212910; 1956. A model of the 1833 reaper patented by Obed Hussey and based on the specifications of the patent. Constructed by the Office of Exhibits, Smithsonian Institution. 106. Horse Spurs, possibly late 19th century. USNM 211312; 1956. Gift of Catholic University of America, Washington, D. C. 107. Bridle Bits, possibly late 19th century. USNM 211312; 1956. A rugged type of bridle bit with steel rings used to control horses. This particular bridle bit may have been used in Texas and Mexico in the cattle industry. Gift of Catholic University of America, Washington, D. C. 108. Cow Bell, possibly late 19th century. USNM 211312; 1956. Gift of Catholic University of America, Washington, D. C. 109. Braided Whip, possibly late 19th century. USNM 211312; 1956. A home-made horsewhip. Gift of Catholic University of America, Washington, D. C. 110. Tobacco Clips, possibly late 19th century. USNM 211312; 1956. Seven clips, each different, denoting a brand for labeling tobacco. Gift of Catholic University of America, Washington, D. C. 111. Bar Share Plow, 1807. USNM 214608; 1957. A left-handed wooden moldboard plow. Most American plows cast the furrow to the right. The Reverend Christian Lesher brought this rare sort of plow from Lancaster County, Pennsylvania, to Washington Township, Pennsylvania, in 1807. Gift of Daniel Lesher, Waynesboro, Pennsylvania. [Illustration: Figure 11.--Sausage stuffer, early 19th century. (Catalog No. 112.)]