The unsolved problems of astronomy -- The new problems of the universe -- The structure of the universe -- The extent of the universe -- Making and using a telescope -- What the astronomers are doing -- Life in the universe -- How the planets are weighed -- The mariner's compass -- The fairyland of geometry -- The organization of scientific research -- Can we make it rain? -- The astronomical ephemeris and nautical almanac -- The world's debt to astronomy -- An astronomical friendship -- The evolution of the scientific investigator -- The evolution of astronomical knowledge -- Aspects of American astronomy -- The universe as an organism -- The relation of scientific method to social progress -- The outlook for the flying-machine.

Public domain in the USA.

Electronic text