232. Hoe, 20th century. USNM 239136; 1961. A socket-type, three-tine hoe used to weed vegetable gardens, tobacco, and similar row crops. Gift of Mrs. Henry H. Byrne, Washington, D. C. 233. One-Row Planter, about 1870. USNM 237951; 1961. The gears from the drive-wheel mesh with a set of gears that turn the seed plate. The distance for dropping the seed could be determined by the size of the gear used on the drive-wheel. Gift of H. C. Cole, Crestline, Ohio. 234. Portable Gasoline Engine, 1903. USNM 240546; 1961. This machine provided belting power for operating feed mills, cream separators, wood saws, etc. It generated 2 hp at 300-600 rpm. It was covered by two patents dated April 7, 1903. Gift of New Holland Machine Co., New Holland, Pennsylvania. 235. Cotton Planter, 20th century. USNM 240545; 1961. This one-row, horse-drawn cotton planter drilled cottonseed in rows by means of a revolving wooden drum with one-inch holes spaced around the center of the drum. Gift of Lester Souter, Boerne, Texas. 236. Wooden Spade, about 1840. USNM 240543; 1961. This wooden spade has a metal cutting edge. Purchased from Mrs. H. J. Cummings, Washington, D. C. 237. Model of McCormick Reaper, 1831. USNM 236710; 1961. A full-scale model of the 1831 McCormick reaper. Gift of Franklin Institute, Philadelphia, Pennsylvania. 238. Hoe, date unknown. USNM 239502; 1961. This is a socket-type hoe with a half-moon cutting blade. Gift of Dr. Ivor Cornman, Miami, Florida. 239. Curd Breaker, mid 19th century. USNM 239502; 1961. This tool for cutting cheese curds has four 15-inch parallel blades. Gift of Dr. Ivor Cornman, Miami, Florida. 240. Wooden Brace, possibly mid 19th century. USNM 239502; 1961. This implement was used to hold open the split carcasses of hogs. Gift of Dr. Ivor Cornman, Miami, Florida. [Illustration: Figure 20.--A view in the Hall of Farm Machinery, National Museum of History and Technology. The Holt combine in 1887 (Catalog No. 241) is at left. The Victor mowing machine of 1880 (Catalog No. 137) is in right foreground.] 241. Holt Combine, 1887. USNM 236419, 1961. Benjamin Holt made this combine around 1887. Its main feature is the use of linked, wrought-iron chain belts for the drive rather than a system of gears as commonly found on combines of that day. Gift of Mrs. C. Parker Holt, Stockton, California. 242. Waterwheel and Shafting, mid 19th century. USNM 238174; 1961. Components of a one-blade, sash sawmill. Purchased from Robert E. Clement, Chester Springs, Pennsylvania. 243. Apple Parer, about 1760. USNM 240544; 1962. The operator sat on the wooden seat and turned a crank which rotated the apple fastened to a spindle. When held at the proper contact, the knife peeled the rotating apple. Purchased from Mrs. Gladys Harbst, Butler, Ohio.