Of trees are oak, hickory, walnut,
cypress, pine, birch, beech, and others. Tools, instruments, and
inventions are mentioned, with their uses, as guns, Indian weapons,
compass, thermometer, barometer, boats, carpenter's tools; also, the
uses of iron, lead, leather, and many of the simple arts and economies
of life, such as weaving, tempering of metals, tanning, and cooking.
The natural wonders of the country, such as falls, caves, hot-springs,
canons, salt licks, plains, interior deserts, and salt lakes, kinds of
rocks, soils, forests and other vegetation, the phenomena of the
weather and differences in climate, are referred to. All these and
other topics from the broad realm of nature are suggested, any of which
may serve as the starting point for a series of science lessons.
How far the natural science lessons can _heed the suggestions_ of
history and geography and still follow out and develop important
science principles, is one of the great problems for solution. It
would seem that the large number of natural-science topics touched upon
by the history, when increased by the variety of home objects in nature
and by still others called up by the geography work of these years,
would give sufficient variety to the natural science work of the same
period.
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