region in the north to the lower ground in the south, then the
markings must always have been in the same direction: given a fixed
cause, we must have always a fixed result. We shall see, as we go on
in this argument, that the deposition of the "till" was
instantaneous; and, as these markings were made before or at the same
time the "till" was laid down, how could the land

[1. "Climate and Time," p. 391.

2. "Popular Science Monthly," October, 1879, p. 833.]

{p. 26}

possibly have bobbed up and down, now here, now there, so that the
elevation from which the ice-sheet descended

###

SKETCH OF GLACIER-FURROWS AND SCRATCHES AT STONY POINT, LAKE ERIE,
MICHIGAN.

_aa_, deep water-line; _bb_ border of the bank of earthy
materials; _cc_, deep parallel grooves four and a half feet
apart and twenty-five feet long, bearing north 60° east;
_d_, a set of grooves and scratches bearing north 60° west;
_e_, a natural bridge.

[Winchell's "Sketches of Creation," p. 213.]

was one moment in the northeast, and the next moment had whirled away