204
THE ESSEX NATURALIST.
Roses, etc., from China by the late J. Slater of Laytonstone,
Essex." (Botanists' Repository, 1803, plate 291.)
Carl Ludwig Willdenow, in the 5th ed. of Linnaeus' Species
Plantarum 1800, vol. 3, p. 1991, found that the figure in the
Botanists' Repository did not represent the Linnean S.P.C., and
gave the plant figured by Andrews the name of Senecio speciosus,
the introduction of which in the Botanical Cabinet, 1826, vol. 12,
plate 1113, however, is attributed to Gilbert Slater in 1789.
Mr. Brown (Gardeners' Chronicle, 1876, 11, 615) has proved that
the plant in question is from the Cape of Good Hope, not from
China.
Senecio speciosus, Willdenow.
This is supposed to be a native of China, and is said to have
been introduced by Mr. Gilbert Slater in 1789. Botanical
Cabinet, 1826, vol. 12, plate 1113.)
The Botanical Register, 1815, plate 41, describing this plant
says that it was introduced by George [probably a mistake]
Slater in 1789.
Volkameria coccinea.
(Paxton's Horticultural Register and General Magazine, 1836,
vol 5, p 63, etc.)
CENTURIATION IN ESSEX.
AN ACCOUNT OF ROMAN AGRICULTURE IN THE
COUNTY
By RUPERT COLES, B.A., Ph.D., M.Sc.
(With One Plate and Three Text Figures.)
CENTURIATION was an agricultural system practised by
the Romans in regions where both a high standard of
agriculture was attained and the topography of the country
was subdued. The landscape of much of Essex satisfies the
latter requirement, but opinion on the former is divided. Any
attempt to distinguish remains of centuriation in Essex will
therefore necessitate a study of the agricultural methods and
field systems already in force at the time of the Conquest.
Recent researches have indeed indicated that the final Iron Age