London: The Royal Society, 1868. 1st Edition. FIRST EDITION EXTRACTS OF “THE FIRST COORDINATED STUDY OF EARTH CURRENTS & THEIR RELATIONSHIP TO MAGNETIC VARIATIONS” (Zhdanov, Foundations of Geophysical Electromagnetic Theory and Methods, xxxi). George Biddell Airy’s paper includes (1801-1892) five two-color lithographic chart (full plates). 4to. Not ex-library; no stamps of any kind. The plates have moderate foxing; the paper is in fine condition.
Airy was an English mathematician and astronomer as well as Lucasian professor at Cambridge and Astronomer Royal. Among “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” (Wikipedia). Airy’s discovery of a new inequality in the motions of Venus and the earth is in some respects his most remarkable achievement. Item #1195