III.—Remains of Botany
Botany is the art of plants. Plants are divided into trees, flowers, and vegetables. The true botanist knows a tree as soon as he sees it. He learns to distinguish it from a vegetable by merely putting his ear to it.
IV.—Remains of Natural Science
Natural Science treats of motion and force. Many of its teachings remain as part of an educated man's permanent equipment in life. Such are:
(a) The harder you shove a bicycle the faster it will go. This is because of natural science.
(b) If you fall from a high tower, you fall quicker and quicker and quicker; a judicious selection of a tower will ensure any rate of speed.
(c) If you put your thumb in between two cogs it will go on and on, until the wheels are arrested, by your suspenders. This is machinery.
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