Includes index.

Water turbines -- Iron and steel -- The Great Exhibition -- Genetics and Mendel -- The electric telegraph -- Telephones -- Submarines -- The periodic table -- Mapping the moon and mars -- Germs and disease -- The internal combustion engine -- Sources of electricity -- The invention of radio -- Elusive electrons -- The first automobiles -- Airships -- Airplanes -- Capturing sound -- Plastics -- Timelines -- Glossary.