OBSERVATIONS AND REPORTS. 197 
Crreenwich {continued). 
Royal Observatory. Magnetical and Meteorological Observations 
made ... in the years 1840-47, under the direction of G-. B. 
Airj. 7 vols. 4P. London, 1843-49. 
Astronomical and Magnetical and Meteorological Observa- 
tions made ... in the years 1848-78, under the direction of 
G. B. Airy. 4«. London, 1850-80. 
Appendices. 1836. I. Bessel's Refraction Tables. 
II. Table of Factors for converting Errors of R. A. and N, P. 
D. into Errors of Longitude and Ecliptic Polar Distance. 
1837. III. Logarithms of Sines and Cosines to Time, for every 10 
seconds through the 24 hours. 
IV. Tables for converting Sidereal Time into Mean Solar Time. 
1842. Catalogue of the Places of 1439 Stars referred to Jan. 1, 1840. 
1845. Determination of the Longitude of Valentia by Transmission 
of Chronometers. 
1847. Catalogue of 2156 Stars, formed from the Observations made 
1836-47. 
1852. Description of the Transit Circle of the Royal Observatory. 
1854. I. Description of the Reflex Zenith Tube of the Royal Ob- 
servatory. 
II. Catalogue of 1576 Stars, from the Observations made 
1848-53 and reduced to 1850. 
] 856. Description of the Galvanic Chronographic Apparatus of the 
Royal Observatory. 
1864. I. On the value of the Moon's Semidiameter from the Occul- 
tations observed at Cambridge and Greenwich. 
II. Reduction of the Greenwich Planetary Observations. 
1868. I. On the Corrections of Bouvard's Elements of the Orbits of 
Jupiter and Saturn, by Hugh Breen. 
II. New Seven-year Catalogue of 2760 Stars, deduced from 
Observations from 1861 to 1867 . • . and reduced to the 
Epoch 1864. 
III. Description of the Great Equatoreal at the Observatory. 
1875. Numerical Lunar Theory. 
1876. Nine-year Catalogue of 2263 Stars, deduced from Observations 
from 1868 to 1876 . . . reduced to the Epoch 1872. 
1877. Mean Temperature of the Air at every Hour of the Day from 
1849 to 1868., 
Reduction of the Observations of the Moon made . . . from 
1750 to 1830, computed . . . under the superintendence of Gr. B. 
Airy. 2 vols. 4°. London, 1848. 
[continuation] from 1831 to 1851. 4°. London, 1859. 
Reduction of the Observations of Planets made . . . from 
1750 to 1830, computed . . . under the superintendence of G. B. 
Airy. 4^. London, 1845. 
— Reduction of twenty years' photographic records of the 
Barometer and Dry-bulb and Wet-bulb Thermometers, and 
twenty-seven years' Observations of the Earth-Thermometers. 
Made under the direction of Sir G. B. Airy. 4P. London, 1878. 
Catalogue of Library. 8°. London, 1827. 
