329. Barbed Wire, about 1879. From Nodaway County, Missouri. Patented by John S. Crowell of Springfield, Ohio, in 1879; Patent 215,888. 330. Barbed Wire, about 1883. From Nodaway County, Missouri. Patented by James B. Oliver of Pittsburgh, Pennsylvania, in 1883; Patent 286,147. 331. Barbed Wire, about 1875. "Split Diamond," patented by Henry Frentress of Dunleith, Illinois, in 1875; Patent 171,008. 332. Barbed Wire, about 1876. "Jayne-Hill," patented by William Jayne and James Hill of Boone, Iowa, in 1876; Patent 176,120. The barbs clamp very firmly in this wire. 333. Barbed Wire, about 1874. From Andrew County, Missouri. Patented by Josiah F. Glidden of De Kalb, Illinois, in 1874; Patent 150,683. 334. Barbed Wire, about 1939. War wire used by the British army in World War II. 335. Barbed Wire, about 1914. War wire used by the U. S. Army in World War I. 336. Barbed Wire, date unknown. "Glidden No. 51," a wide-faced cattle wire made by Republic Steel Wire Company. 337. Barbed Wire, date unknown. "Glidden No. 50," a closed-face hog wire made by Republic Steel Wire Company. 338. Tool for Barbed Wire, about 1875. Device for making barbed wire on the farm. Patented by John Dobbs and Benjamin Booth in 1875; Patent 166,511. 339. Barbed Wire, 1881. USNM 265912; 1966. "Brink Flat," patented in 1881. Gift of Mrs. Miles McPeek, Washington, D. C. 340. Stump Puller, 20th century. USNM 266811; 1966. A one-man, hand-operated stump puller. The machine consists of several pulleys, a length of wire cable, and a rachet mechanism to give leverage. Gift of A. E. McMechan, Joplin, Missouri. 341. Plowshare, about 1840. USNM 268949; 1966. A wrought-iron fragment from a plowshare said to have been used for cultivating cotton in South Carolina. It appears to be from a "duck foot" type plow. Gift of Great Plains Museum, Lawton, Oklahoma. 342. Saddler's Buck, late 19th century. USNM 268199; 1966. A small bench with a wooden vise to hold leather and parts of saddles. Gift of Museum of Science and Industry, Chicago, Illinois. 343. Flax Breaker, mid or late 19th century. USNM 268199; 1966. A rectangular bench measuring about 3 feet long, 3 feet high, and 3 feet wide. The operator pulled a hinged arm of slats down on the bench, which also has slats. The flax stems broke between the slats. Gift of Museum of Science and Industry, Chicago, Illinois. 344. Prairie Sod Plow, late 19th century. USNM 268199; 1966. This heavy plow with an 8-foot beam broke virgin prairie soil. The long fingers of the moldboard helped break the sod further. Gift of Museum of Science and Industry, Chicago, Illinois. [Illustration: Figure 27.--Butter worker, 19th century. (Catalog No. 345.)]