on, D. C.

7. A Korean Farrier Shoeing a Horse in the Late 18th Century. USNM
19048; 1887. By Han Chin U. Gift of G. Goward, Washington, D. C.

8. Centrifugal Cream Separator, 1868. USNM 23744; 1890. The first
centrifugal cream separator used commercially in the United States. The
Deerfoot Farm at Southborough, Massachusetts, used this machine,
patented by D. M. Weston of Boston. Gift of Deerfoot Farm Company,
Southborough, Massachusetts.

9. Model of Blount's Daisy Plow, 1890. USNM 23873; 1891. This model of a
one-horse plow shows Blount's Daisy steel plow as pictured in the
catalog of Henry F. Blount. Gift of Henry F. Blount, Evansville,
Indiana.

[Illustration: Figure 1.--Views of Old Colony Strong Plow, about 1732.
(Catalog No. 10.)]

10. Old Colony Strong Plow, 1732. USNM 34769; 1899. In 1732 Peter Hardy
of Raymond, New Hampshire, made this plow for Henry Lamprey of
Kensington, New Hampshire. Gift of J. P. Lamprey, Kensington, New
Hampshire.

11. Winnowing Basket, 1799. USNM 37441; 1901. A winnowing basket, or
pan, made of willow woven over wide sprints; elliptical in shape, with a
frame of thick rods. Noah Rogers bought this pan in New York in 1799 or
1800. Gift of Frank A. Brown, Savage, Maryland.

12. Model of Flail Threshing Machine, 19th Century. USNM 46812; 1906.
The frame of this wooden model is 7-1/2 inches high and 5 by 6 inches,
rectangular. The levers, 14 inches long, project from the frame and
strike the floor much as a flail would. Pins set in the shaft of a hand
crank act as cams, raising the flails which then fall to the ground by
gravity. Gift of United States Department of the Interior.

13. Model of Gallic Grain Header, about A.D. 70. USNM 46812; 1906. A
wooden box on wheels, 12 by 5 inches, has metal teeth set at the front
end. Shafts extend to the rear, where an ox is yoked. The forward
movement of the cart causes the grain to lodge against the teeth, which
pulled the heads off. The grain then fell back into the box. Gift of
United States Department of the Interior.

14. Model of Ten Eyck Grain Harvester, 1825. USNM 46812; 1906. Model is
made of wood and iron, 15 inches by 8 inches. Long knives on a drum were
rotated by belt shaft on traveling wheels. Long projecting points
gathered the straw. Iron shafts at the rear allowed animals to be
harnessed to push the machine. James Ten Eyck patented the harvester on
November 2, 1825. Gift of United States Department of the Interior.

15. M