ASTRONOMY.
AIRY (Sir G. B.).—Popular Astronomy. Illustrated. 7th Edit. Fcp. 8vo. 4s. 6d.
—— Gravitation. An Elementary Explanation of the Principal Perturbations in the Solar System. 2nd Edit. Cr. 8vo. 7s. 6d.
BLAKE (J. F.).—Astronomical Myths. With Illustrations. Cr. 8vo. 9s.
CHEYNE (C. H. H.).—An Elementary Treatise on the Planetary Theory. Cr. 8vo. 7s. 6d.
CLARK (L.) and SADLER (H.).—The Star Guide. Roy. 8vo. 5s.
CROSSLEY (E.), GLEDHILL (J.), and WILSON (J. M.).—A Handbook of Double Stars. 8vo. 21s.
—— Corrections to the Handbook of Double Stars. 8vo. 1s.
FORBES (Prof. George).—The Transit of Venus. Illustrated. Cr. 8vo. 3s. 6d.
GODFRAY (Hugh).—An Elementary Treatise on the Lunar Theory. 2nd Edit. Cr. 8vo. 5s. 6d.