attached to the Moline Universal Model D tractor of 1918. Gift of
Minneapolis-Moline, Inc., Hopkins, Minnesota.

251. Sulky Plow, 1880. USNM 242414; 1962. A Moline two-wheeled sulky
plow. Three horses drew the plow, which has three singletrees and one
doubletree. Gift of Minneapolis-Moline, Inc., Hopkins, Minnesota.

252. Grain Binder, 1935. USNM 422427; 1962. This McCormick-Deering grain
binder cut the grain and, by means of an apron, carried it through a
bundling and tying mechanism. The bundles of grain fell into a set of
forks which the operator released. The machine is covered by Patents
1,328,781 and 1,464,736. It is similar to binders used in the 1880s.
Gift of J. D. Major, Belton, South Carolina.

[Illustration: Figure 23.--Cattle dehorner. (Catalog No. 253.)]

253. Dehorner, about 1920. USNM 242977, 1962. This implement, used to
trim cattle horns, works like a gigantic clipper. Gift of Newton E.
Wiat, Arlington, Virginia.

254. Portable Steam Engine, 1869. USNM 246139; 1962. The first portable
steam engine built by the J. I. Case Company in 1869. It burned wood and
developed 8 hp. Gift of J. I. Case Company, Racine, Wisconsin.

255. Japanese Cultivating Machine, 1960. USNM 242908; 1962. This
Japanese Model KF850 power cultivator has a detachable rotary hoe and a
diesel engine with direct drive.

256. Wooden Grain Fork, about 1870. USNM 252786; 1963. A four-tined
wooden fork for handling bundles of grain. It was used by the donor's
grandfather on his farm in Maryland. Gift of C. Gordon Dentry,
Washington, D. C.

257. Model of Lawn Mower, 1962. USNM 256817; 1963. A model of the
Suburbia 38, a riding mower powered by a 5-3/4-hp gasoline engine with
three speeds between 1/2 mph and 4-1/2 mph. Gift of Herman Becker,
Washington, D. C.

258. Broadcast Seeder, about 1892. USNM 257164; 1964. A hand-cranked
seeder. Gift of Milton J. Brandon, Silver Spring, Maryland.

259. Tobacco Axe, mid 20th century. USNM 257163; 1964. A tobacco axe
used to harvest sun-cured tobacco in the Connecticut Valley region. Gift
of Minner J. Cooper, Windsor, New York.

260. Daveat Milk Sterilizer, 1959. USNM 259871; 1964. An autoclave
combined with vacuum chambers and other devices that sterilized and
canned milk or other liquid dairy products. The process preserved the
product with a minimum loss of nutritional value and without causing
coagulation. Patent 2,899,320 granted to Elmer S. Davis, August 11,
1959.

261. Hay Bale Ho