SCIENCE - AIRY George Biddell (1801-1892) - Autograph letter signed Autograph letter signed, dated “1858 Dec. 17” by the English mathematician and astronomer, seventh Astronomer Royal from 1835 to 1881. His many achievements include work on planetary orbits, measuring the mean density of the Earth, a method of solution of two-dimensional problems in solid mechanics and, in his role as Astronomer Royal, establishing Greenwich as the location of the prime meridian. Addressed to a gentleman: “…I have lately seen some of the Heads of the University of Cambridge, who have expressed to me their wish that my communication (A.B.G.) to the Athenaeum of November 6 should be circulated as a small pamphlet…”. 3 pp. In-8. - This item is under temporary import. If the item is delivered within the United Kingdom, it will be subject to a 5% Value Added Tax (VAT) on the hammer price.