widely in Loudon County,
Virginia. Gift of United States Department of Agriculture.

51. Smith Plow, about 1800. USNM 161555; 1941. This sod-turning plow has
its landside, moldboard, and colter in separate pieces. It was built on
the lines of a plow patented by Robert Smith in 1800. Gift of United
States Department of Agriculture.

52. Gideon Davis Plow, about 1825. USNM 161555; 1941. Gideon Davis
received a patent in 1825 for his improvements of the Newbold plow
patented in 1797. In tests in 1825 to determine the efficiency of
different plows, the Davis plow took first place in a competition with
five others. Gift of United States Department of Agriculture.

53. Woodcock Plow, about 1848. USNM 161555; 1941. The Woodcock plow has
separate landside, moldboard, share, cutter, and point. This plow has
the first reversible point. Woodcock plows were first used in 1847, in
Maryland. Gift of United States Department of Agriculture.

[Illustration: Figure 6.--Eagle plow, about 1849. (Catalog No. 54.)]

54. Eagle Plow, 1849. USNM 161555; 1941. The Number 25 Eagle Plow, which
first appeared in the catalog of the J. Nourse Company in 1849, became
the standard plow of New England after the middle of the 19th century.
Its moldboard was based on a design worked out by Thomas Jefferson. Gift
of United States Department of Agriculture.

55. Mexican Plow, about 1890. USNM 161555; 1941. This Mexican bull
tongue plow has an iron shoe on the point and it closely resembles
Spanish plows of the 16th century. It was intended to be pulled by an ox
and to break the soil for only three or four inches at the most. Gift
of United States Department of Agriculture.

56. Butcher's Saw, 1879. USNM 130572; 1942. This saw is part of a set of
butcher's tools (Nos. 56-67) presented to William H. Hoover by the
Washington Light Infantry Corps in 1879. All the tools have a silver
presentation plate on the handle and have nickel plating. A. Nittinger,
Jr., of Philadelphia, made the set. Gift of N. Auth Provision Company,
Washington, D. C.

57. Splitting Cleaver, 1879. USNM 130572; 1942. Butcher's tool. Gift of
N. Auth Provision Company, Washington, D. C.

58. Cleaver, 1879. USNM 130572; 1942. Butcher's tool. Gift of N. Auth
Provision Company, Washington, D. C.

59. Meat Axe, 1879. USNM 130572; 1942. Butcher's tool. Gift of N. Auth
Provision Company, Washington, D. C.

60. Knife, 1879. USNM 130572; 1942. Butcher's knife. Gift of N. Auth
Provisio