This popular 18th-century science book provides a comprehensive overview of the natural world, from astronomy and physics to botany and zoology. Written in a clear, accessible style, it was intended for a general audience and quickly became a bestseller. Today, it remains a fascinating document of the history of science and a valuable introduction to the wonders of the natural world.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.

Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.