Plants and animals, biding their time, closely followed the retiring
ice, bestowing quick and joyous animation on the new-born landscapes.
Pine-trees marched up the sun-warmed moraines in long, hopeful files,
taking the ground and establishing themselves as soon as it was ready
for them; brown-spiked sedges fringed the shores of the newborn lakes;
young rivers roared in the abandoned channels of the glaciers; flowers
bloomed around the feet of the great burnished domes,--while with quick
fertility mellow beds of soil, settling and warming, offered food to
multitudes of Nature's waiting children, great and small, animals as
well as plants; mice, squirrels, marmots, deer, bears, elephants, etc.
The ground burst into bloom with magical rapidity, and the young forests
into bird-song: life in every form warming and sweetening and growing
richer as the years passed away over the mighty Sierra so lately
suggestive of death and consummate desolation only.
It is hard without long and loving study to realize the magnitude of the
work done on these mountains during the last glacial period by glaciers,
which are only streams of closely compacted snow-crystals.
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