Edward Somerset's compendium of inventions includes descriptions, drawings, and specifications of a wide variety of devices, ranging from practical tools to fantastical contraptions. Some of the inventions featured in this book were actually produced and marketed during Somerset's lifetime, while others remained purely theoretical. This reprinted edition includes annotations and commentary by modern scholars, providing context and insights into the historical significance of Somerset's work.

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

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