ABSTRACT
FROM the sun, which is our great fountain of power or energy, we passed naturally to the earth and began to take stock. We got glimpses of its changes from age to age—changes in the arrangements of its matter and energy. We lingered for a little over the different forms of energy, which may be defined as the power of doing work; and then we passed to the different forms that matter, such as water, may take : gaseous, liquid, solid, and filmy. But we must not make too much of the difference between these two great realities Matter and Energy, which used to seem so different, for modern investigators of Physics have shown that matter is made up of different combinations of electrons and protons,—that is to say, negative and positive charges of electricity, and electricity is a form of energy.
