Lessons In Elementary Dynamics - By H.G. Madan - 1888 - CHAPTER I. GENERAL PROPERTIES OF MATTER - l. As we look around us at the vast amid of objects which our senses makes us aware of, and which make up what we call nature, or the natural world, we cannot help being struck by trro things firstly, the immense variety of these phenomena as they are termed Greek arripra, appearances and secondly, the ceaseless changes which they are undergoing, No one can help asking what these objects redly are, watching their various actions on one another, and trying to find out the reasons of what he sws. And no one can study nature carefully without becoming convinced that the universe is not a mere collection of t.hings brougIt together by accident and ruled by chance, but that there is an order throughout it ,that one thing happens Beeauss something else has previously happened in a word, that every particular change is the etiect of Bolne definite cause. Thus, the boiling of............

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