Introduction

This evening we're relaxing with science primers and introductory by Professor Thomas Henry Huxley. First published in 1880 by Macmillanin Co. London. 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. When we have any of these sensations, we commonly say that we feel or hear or smell, or see or taste something. 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