00956cam a2200205 4500 377075218 TxAuBib 20170330120000.0 161029s2016||||||||||||||||||||||||eng|u 53396 Project Gutenberg PGUSA eng TxAuBib Jacoby, Harold, 1865-1932. Practical Talks by an Astronomer [Gutenberg] / Harold Jacoby. Project Gutenberg, 2016. Navigation at sea -- The Pleiades -- The pole-star -- Nebulæ -- Temporary stars -- Galileo -- The planet of 1898 -- How to make a sun-dial -- Photography in astronomy -- Time standards of the world -- Motions of the earth's pole -- Saturn's rings -- The heliometer -- Occultations -- Mounting great telescopes -- The astronomer's pole -- The moon hoax -- The sun's destination. Public domain in the USA. Text. Astronomy. http://www.gutenberg.org/ebooks/53396 TXCAN