In 1900 the center of population was nearly back to where it was
in 1880, but by 1910 the westward movement was again in
progress, more slowly than before, but with a surer basis of ir-
rigation in the valleys and dry-farming on the uplands/

In Kentucky and Mar>iand there have been no striking de-
velopments in the last thirty years, and the centers of popula-
tion have not moved much. The same might be said of Massa-
chusetts, where although the increase of population has been
rapid, chiefly on account of manufacturing, it has been pretty
uniformly distributed.
In Michigan the influence of the automobile industry in De-
troit is perceptible in the last decade.
In Mississippi the movement of population has been south-
ward toward the pine-barrens, as in Georgia, and at about the
same rate.
Missouri shows a southerly and southeasterly migration,
probably correlated at least in part with drainage operations in
the alluvial region in the southeast, as in Arkansas.
The movement of the center of population in Nebraska has
been similar to that in Kansas, and doubtless for the same rea-
sons.
In Nevada the center has moved rather erratically, probably
in response to mining developments.
In New York the prevailing movement has been southward,
mostly in the direction of the largest city. (See Brigham, Geog.
Review, 2:209. Sept. 1916.)



♦For a comprehensive account of the rise and fall of the sreat wave of
immigration in western Kansas and contiguous territory see W. D. Johnson
on The High Plains and their Utilization, in <part 4 of the 2l8t and 22nd annual
reports of the U. S. Geological Survey, 1901 and 1902.
