IT would be difficult to conceive a more masterly and comprehensive exposition of astronomical and physical constants than one just issued by Prof. W. Harkness, of the United States Naval Observatory.

Upon arriving in Nagasaki, Japan, on December 9, 1874, after a 48-day journey by ship, astronomer and engineer Francisco Antonio de Almeida Júnior (1851–1928), born in Rio de Janeiro, described the ...

In 1869, Scientific American – a popular science magazine and now the oldest continuously published monthly in the U.S. – had an article titled The Transits of Venus in 1874 and 1882. As you might now ...

MR. PROCTOR entirely misunderstands me if he thinks that my criticism on his account of the solar parallax had reference to any failure on his part to give prominence to the discussion between Mr.

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