Both volumes of John Tyndall’s collected essays, addresses and reviews, in the sixth edition of 1879. The first, on inorganic nature, covers radiation and the ether, the absorption of radiant heat by gases and vapours, invisible rays of the electric light and the constitution of nature; the second turns to living things, scientific materialism and the debates between science and religion.
Tyndall, who measured how gases trap heat and studied why the sky is blue, was one of the finest science writers of his century. Download the free EPUB.