272. Iron Spike, late 19th century. USNM 262250; 1965. An iron spike, probably from a harrowing device such as a triangular beam harrow. Gift of Dr. Frank Horsfall, Blacksburg, Virginia. [Illustration: Figure 24.--Flax hackle. (Catalog No. 273.)] 273. Flax Hackle, late 19th century. USNM 263350; 1965. This hackle consists of a piece of wood, 6 by 12 inches, with square iron nails protruding from one side. The homemade hackle shredded flax in preparation for making linen cloth. Gift of Dr. Frank Horsfall, Blacksburg, Virginia. 274. Barley Fork, late 19th or early 20th century. USNM 262250; 1965. A wooden, four-tined fork used for handling barley. Gift of Dr. Frank Horsfall, Blacksburg, Virginia. 275. Wooden Wheelbarrow, 20th century. USNM 262250; 1965. All parts of this wheelbarrow are homemade. Gift of Dr. Frank Horsfall, Blacksburg, Virginia. 276. Wooden Wheel, 19th century. USNM 262250; 1965. A wooden wheel used on a wheelbarrow. Seven separate parts to the wheel illustrate the general construction of wooden wheels. Gift of Dr. Frank Horsfall, Blacksburg, Virginia. 277. Grain Sack, about 1865. USNM 263077; 1965. Peter Brugler Snyder used this grain sack about 100 years ago on his farm near Montour Falls, New York. The initials P. B. S. appear on the sack. Gift of Howard S. Rappleye, Washington, D. C. [Illustration: Figure 25.--Corn sheller. (Catalog No. 278.)] 278. Corn Sheller, about 1898. USNM 264779; 1965. A corn sheller that was operated by means of a hand crank. Gift of Dr. Stephen Lang, San Fernando, California. 279. Barbed-Wire Display Panel, about 1940. USNM 264475; 1966. Display panel of 78 different types of barbed wire. Gift of Dr. Frank Horsfall, Blacksburg, Virginia. 280. Barbed Wire, about 1878. Eight pieces of "Brotherton Barb," a wire patented by J. Brotherton of Ames, Iowa, in 1878; Patent 207,710. It became very popular, and was second only to Glidden's "The Winner" in sales. It had nonslipping barbs and was easy to make. 281. Barbed Wire, about 1882. "Baker Perfect," a barbed wire invented by George Baker of Des Moines, Iowa. It was popular and widely used but never patented. 282. Barbed Wire, about 1881. From Jefferson County, Iowa. Patented by Edward M. Crandall of Chicago, Illinois, in 1881; Patent 247,540. 283. Barbed Wire, about 1876. Two pieces of "Twist Oval," a wire patented by Josiah F. Glidden of De Kalb, Illinois, in 1876; Patent 181,433. The use of oval wire shows an effort to prevent slipping of the barb. 284. Barbed Wire, about 1877. From Nodaway County, Missouri. Patented by Henry M. Rose of Waterman, Illinois, in 1877; Patent 198,688. 285. Barbed Wire, about 1878. From Jefferson County, Iowa. Patented by Michael Daley of Waterman, Illinois, in 1878; Patent 209,467. 286. Barbed Wire, date unknown. From Jefferson County, Iowa. A handmade specimen made with a tool in this collection.