A MANUAL OF SCIENTIFIC ENQUIRY, for the Use of Travellers. Edited by Sir JOHN F. HERSCHEL, and Rev. ROBERT MAIN. _Third Edition._ Woodcuts. Post 8vo. 9_s._ AIRY’S ASTRONOMICAL OBSERVATIONS MADE AT GREENWICH. 1836 to 1847. Royal 4to. 50_s._ each. ---- ASTRONOMICAL RESULTS. 1848 to 1858. 4to. 8_s._ each. ---- APPENDICES TO THE ASTRONOMICAL OBSERVATIONS. 1836.--I. Bessel’s Refraction Tables. } II. Tables for converting Errors of R.A. and N.P.D. } 8_s._ into Errors of Longitude and Ecliptic P.D. } 1837.--I. Logarithms of Sines and Cosines to every Ten } Seconds of Time. } 8_s._ II. Table for converting Sidereal into Mean Solar Time. } 1842.--Catalogue of 1439 Stars. 8_s._ 1845.--Longitude of Valentia. 8_s._ 1847.--Twelve Years’ Catalogue of Stars. 14_s._ 1851.--Maskelyne’s Ledger of Stars. 6_s._ 1852.--I. Description of the Transit Circle. 5_s._ II. Regulations of the Royal Observatory. 2_s._ 1853.--Bessel’s Refraction Tables. 3_s._ 1854.--I. Description of the Zenith Tube. 3_s._ II. Six Years’ Catalogue of Stars. 10_s._ 1856.--Description of the Galvanic Apparatus at Greenwich Observatory. 8_s._ 1862.--I. Seven Years’ Catalogue of Stars. 10_s._ II. Plan of the Building and Ground of the Royal Observatory, Greenwich. } 3_s._ III. Longitude of Valentia. } ---- MAGNETICAL AND METEOROLOGICAL OBSERVATIONS. 1840 to 1847. Royal 4to. 50_s._ each. ---- ASTRONOMICAL, MAGNETICAL, AND METEOROLOGICAL OBSERVATIONS, 1848 to 1864. Royal 4to. 50_s._ each. ---- ASTRONOMICAL RESULTS. 1848 to 1864. 4to. ---- MAGNETICAL AND METEOROLOGICAL RESULTS. 1848 to 1864. 4to. 8_s._ each. ---- REDUCTION OF THE OBSERVATIONS OF PLANETS. 1750 to 1830. Royal 4to. 50_s._ -------- LUNAR OBSERVATIONS. 1750 to 1830. 2 Vols. Royal 4to. 50_s._ each. ------------ 1831 to 1851. 4to. 20_s._ BERNOULLI’S SEXCENTENARY TABLE. _London_, 1779. 4to. BESSEL’S AUXILIARY TABLES FOR HIS METHOD OF CLEARING LUNAR DISTANCES. 8vo. ----FUNDAMENTA ASTRONOMIÆ: _Regiomontii_, 1818. Folio. 60_s._ BIRD’S METHOD OF CONSTRUCTING MURAL QUADRANTS. _London_, 1768. 4to. 2_s._ 6_d._ ---- METHOD OF DIVIDING ASTRONOMICAL INSTRUMENTS. _London_, 1767. 4to. 2_s._ 6_d._ COOK, KING, AND BAYLY’S ASTRONOMICAL OBSERVATIONS. _London_, 1782. 4to. 21_s._ ENCKE’S BERLINER JAHRBUCH, for 1830. _Berlin_, 1828. 8vo. 9_s._ GROOMBRIDGE’S CATALOGUE OF CIRCUMPOLAR STARS. 4to. 10_s._ HANSEN’S TABLES DE LA LUNE. 4to. 20_s._ HARRISON’S PRINCIPLES OF HIS TIME-KEEPER. PLATES 1797. 4to. 5_s._ HUTTON’S TABLES OF THE PRODUCTS AND POWERS OF NUMBERS. 1781. Folio. 7_s._ 6_d._ LAX’S TABLES FOR FINDING THE LATITUDE AND LONGITUDE. 1821. 8vo. 10_s._