Science Primers, Introductory

Transcriber’s Note:
The cover image was created by the transcriber and is placed in the public domain.
PROFESSOR HUXLEY, F.R.S.
Toronto:
CANADA PUBLISHING CO.,
(LIMITED.)
Entered according to the Act of the Parliament of Canada, in the year One Thousand Eight Hundred and Eighty-one by Macmillan & Co., London, in the Office of the Minister of Agriculture .
SCIENCE PRIMERS.
INTRODUCTORY.
All the time that we are awake we are learning by means of our senses something about the world in which we live and of which we form a part; we are constantly aware of feeling, or hearing, or smelling, and, unless we happen to be in the dark, of seeing; at intervals we taste. We call the information thus obtained sensation .
When we have any of these sensations we commonly say that we feel, or hear, or smell, or see, or taste, something. A certain scent makes us say we smell onions; a certain flavour, that we taste apples; a certain sound, that we hear a carriage; a certain appearance before our eyes, that we see a tree; and we call that which we thus perceive by the aid of our senses a thing or an object .
Moreover, we say of all these things, or objects, that they are the causes of the sensations in question, and that the sensations are the effects of these causes. For example, if we hear a certain sound, we say it is caused by a carriage going along the road, or that it is the effect, or the consequence, of a carriage passing along. If there is a strong smell of burning, we believe it to be the effect of something on fire, and look about anxiously for the cause of the smell. If we see a tree, we believe that there is a thing or object, which is the cause of that appearance in our field of view.