Scientific Works published by Longmans, Green, & Co. 21 

WORKS BY RICHARD A. PROCTOR. 
THE MOON: Her Motions, Aspect, Scenery, and Physical 
Condition. With many Plates and Charts, Wood Engravings, and 2 Lunar 
Photographs. Crown 8vo., 35. 6d. 
€ 
OTHER WORLDS THAN OURS: the Plurality of Worlds 
Studied Under the Light of Recent Scientific Researches. With rq Illustrations; 
Map, Charts, etc. Crown 8vo., 35. 6d. 
OUR PLACE AMONG INFINITIES: a Series of Essays con- 
trasting our Little Abode in Space and Time with the Infinities around us. 
Crown 8vo., 35. 6d. 
MYTHS AND MARVELS OF ASTRONOMY. Crown 8vo., 
3s. 6d. 
LIGHT SCIENCE FOR LEISURE HOURS: Familiar Essays 
on Scientific Subjects, Natural Phenomena, etc. Crown 8vo., 35. 6d. 
THE ORBS AROUND US; Essays on the Moon and Planets, 
Meteors and Comets, the Sun and Coloured Pairs of Suns. Crown 8vo., 35. 6d. 
THE EXPANSE OF HEAVEN: Essays on the Wonders of the 
Firmament. Crown 8vo., 35. 6d. 
OTHER SUNS THAN OURS: a Series of Essays on Suns—Old, 
Young, and Dead. With other Science Gleanings. Two Essays on Whist, 
and Correspondence with Sir John Herschel. With 9 Star-Maps and Diagrams. 
Crown 8vo., 35. 6d. 
HALF-HOURS WITH THE TELESCOPE: a Popular Guide 
to the Use of the Telescope as a means of Amusement and Instruction. With 
7 Plates. Fep. 8vo., 25. 6d. 
NEW STAR ATLAS FOR THE LIBRARY, the School, and 
the Observatory, in Twelve Circular Maps (with Two Index-Plates). With an 
Introducticn on the Study of the Stars. Illustrated by 9 Diagrams. Cr. 8vo., 55. 
THE SOUTHERN SKIES: a Plain and Easy Guide to the 
Constellations of the Southern Hemisphere. Showing in 12 Maps the position 
of the principal Star-Groups night after night throughout the year. With an 
Introduction and a separate Explanation of each Map. ‘True for every Year. 
4to., 55. 
HALF-HOURS WITH THE STARS: a Plain and Easy Guide 
to the Knowledge of the Constellations. Showing in 12 Maps the position of 
the principal Star-Groups night after night throughout the year. With Intro- 
duction and a separate Explanation of each Map. True for every Year. 
4to., 35. net. 
LARGER STAR ATLAS FOR OBSERVERS AND STUDENTS. 
In Twelve Circular Maps, showing 6000 Stars, 1500 Double Stars, Nebulz, etc. 
With 2 Index-Plates. Folio, 15s. 
OVER, 
