WORKS BY THE SAME AUTHOR. 



LESSONS in ELEMENTARY ASTRONOMY ; with an 



Appendix containing Hints for young Telescopists. Third 

 Edition, enlarged, with 47 Woodcuts. Fcp. 8vo. price Is. 6d. 



ELEMENTARY PHYSICAL GEOGRAPHY. With 33 

 Maps, Woodcuts, and Diagrams. Fcp. 8vo. price Is. 6d. 



The ORBS AROUND US ; a Series of Familiar Essays 

 on the Moon and Planets, Meteors and Comets, the Sun and 

 Coloured Pairs of Stars. Second Edition, with Chart and 4 

 Diagrams. Crown 8vo. 7s. 6d. 



The MOON ; Her Motions, Aspect, Scenery, and Physical 

 Condition. Kevised Edition, with 22 Lithographic Plates, 

 Charts and Diagrams, 1 Wood Engraving, and 3 Lunar Photo- 

 graphs. Crown 8vo. price 10s. 6d. 



The SUN ; RULER, LIGHT, FIRE, and LIFE of the 



PLANETAKY SYSTEM. Kevised Edition, with 10 Plates 

 (7 Coloured) and 106 Figures engraved on Wood. Crown 8vo. 

 price 14s. 



coveries that have been effected by 

 means of the telescope, the spectroscope, 

 polariscopic analysis, and photography. 

 There are treated very fully the ques- 



'The fact that such a book as the 

 present should have reached a third 

 edition says much for the growing taste 

 for works of an educational character 

 among the reading public. It is perhaps 

 the most interesting of the series of pub- 

 lications, astronomical and scientific, 

 issued by Mr. PROCTOR. The new edition 

 appears to have been carefully revised, 

 and some important sections have been 

 added to it. The appendix on Transits 

 of Venus has wisely been removed, the 

 purpose for which the essay was written 

 having been accomplished. The reader 

 has placed before him all that is known, 

 or what may be surmised, of the great 

 ruling luminary of our system ; the dis- 



tions of the sun's distance, his influence 

 as ruler over the system of planets, his 

 physical condition, and his place and 

 motions among his fellow suns ; while 

 reasons are presented for considering 

 that the most important work science 

 has to accomplish is to show how the 

 sun's action can be more folly utilised 

 than it is at present. We should not 

 omit to state that the book is enriched 

 with nine lithographic plates (seven 

 coloured) and one hundred drawings on 

 wood." The LANCET. 



ESSAYS on ASTRONOMY; a Series of Papers on 

 Planets and Meteors, the Sun and Sun-surrounding Space, Stars 

 and Star Cloudlets. Kevised Edition, preceded by a Sketch of 

 the Life and Work of Sir John Herschel. With 10 Plates and 

 24 Engravings on Wood. 8vo. price 12*. 



OTHER WORLDS THAN OURS; the Plurality of 

 Worlds Studied under the Light of Recent Scientific Researches. 

 With 14 Illustrations. Crown 8vo. price 10s. 6d. 



The UNIVERSE of STARS ; presenting Researches into 



the New Views respecting the Constitution of the Heavens, 

 with an Investigation of the Conditions of the Transits of Venus. 

 With 22 Lithographic Charts (4 Coloured) and 22 Diagrams on 

 Wood. 8vo. price 10s. Qd. 



