dboard of metal with a gauge wheel on the beam. The
beam pivots on the standard, allowing adjustments of the angle of draft.
The end of the beam is fastened to a brace which extends to the back of
the moldboard. The share and point are in one piece; and the moldboard
is one piece. The model resembles the plows of James Oliver, which by
1885 had been widely known and were quite possibly copied. Donor
unknown.

71. Diorama of Tropical Banana Plantation, late 19th century. USNM
186623; 1950. The diorama shows bananas being harvested and trees being
cut. The banana bunches get to the railroad cars on burros. At the
bottom, bananas are shown in various stages of growth and ripening. Gift
of United Fruit Company, Washington, D. C.

72. Diorama of Tropical Coffee Plantation, late 19th century. USNM
186553; 1950. The diorama shows coffee berries being dried in the sun
and in the shade in preparation for marketing the coffee. At the bottom,
various stages of growth and ripening of the coffee berries are
depicted. Gift of The Great Atlantic and Pacific Tea Company (A & P),
New York, New York.

73. Food-Slicing Machine, mid 19th century. USNM 188878; 1950. Cutting
knives, set in helix in a wooden axle, move the meat through the box,
cutting it finer and finer. Gift of George Murphy, Washington, D. C.

74. Fanning Mill, about 1860. USNM 192872; 1951. A hand-crank operated
the winnowing mill for separating grain from chaff and beans from hulls.
A four-blade, wooden fan, shaped like a paddle wheel, blows a draft
below oscillating screens. The chaff is blown off from the threshed
grain, and the grain or beans fall from the screens into the path of the
draft. The screens catch any straw left after threshing. Gift of Arden
Wilson, Harrisville, West Virginia.

[Illustration: Figure 8.--Two-row corn planter, about 1854. (Catalog No.
75.)]

75. Two-Row Corn Planter, about 1854. USNM 193259; 1952. This
hand-operated planter, of a type patented by S. Malone on January 3,
1854, was sold by William M. Plant, a dealer in seeds, tools, and
machines at St. Louis, Missouri. When the planter was dropped to the
ground, the two handles moved about 8 inches in a slot toward the
outside. This movement opened a space for the corn to drop into the
shoe, where a small piece of wood opened and the corn fell to the
ground. Gift of Warren Hammond, Fayette, Missouri.

76. Model of Ferguson Tractor, 1952. USNM 193939; 1952. This plastic and
metal mode