Consider the Heavens: 



A Popular Introduction to Astronomy. 



By MRS. WILLIAM STEADMAN ALDIb. 

 With many Illustrations. Crown 8vo. Cloth. 2s. 6d. 



Mrs. Aldis, who has written this little book under the eye of her husband, who 

 was Senior Wrangler, starts with the view that its readers know nothing of astronomy. 

 In clear, simple language, and with an abundance of illustrative examples, the 

 marvellous and the fascinating and many of the difficult points of astronomy are 

 made plain to the reader. 



' We have no hesitation in recommending it as one of the best simple introductions 

 to astronomical science we know.' Glasgow Herald. 



' Written by an authoress who has kept pace with the advance of science, and 

 possesses a full knowledge of all the latest discoveries. Yet it is so lucid and simple 

 that the most unlearned reader could not fail to derive from it a really useful know- 

 ledge of astronomical facts.' Church Times. 



The Royal Observatory, Greenwich: 



A Glance at its History and Work. 

 By E. WALTER MAUNDER, F.R.A.S., 



Assistant at the Observatory. 

 With many Illustrations from Original Photographs. 



Large crown 8vo. Cloth gilt, gilt edges. 53. 

 'The scientific work carried on at the Observatory is lucidly described.' 



' An excellent popular book of science.' Daily News, 



-LM.I ATxauAiu^x. a-ii<ji.iwgi djjii n<td All llic iaaullUlLlull win* 



even for those who understand nothing about it/ Academy, 



The Midnight Sky. 



Familiar Notes on the Stars and Planets. 



By EDWIN DUNKIN, F.R.S., F.R.A.S., 



Fast President of the Royal Astronomical Society, late Chief Assistant 



at the Royal Observatory, Greenwich. 



With 32 Star Maps and numerous other Illustrations. 



New and thoroughly Revised Edition, with an additional Chapter 



and many New Engravings. 

 Imperial 8vo. Cloth, gilt top. 8s. 



' Those little Maps of the starry spaces far surpass, in clearness and useful worth, 

 ftD I have seen before in the planisphere way ; no reader but by help of them may 

 find, with a minimum of trouble, the star he seeks. . . . Why did not somebody 

 teach me the constellations too, and make me at home in the starry heavens, which 

 are always overhead, and which I don't half know to this day ? 'THOMAS CARLYLB 

 (referring to the first edition of this book). 



* For a study of the constellations nothing can be simpler than the system which 

 Mr. Dunkin has adopted. One especially interesting chapter in the present volume 

 is entirely new. It is an account of the principal observatories of the world, bat 

 especially of Greenwich Observatory, where for so many years Mr. Dunkin was chief 

 assistant.' School Board Chronicle. 



' For any one who desires to study the face of the sky we can imagine no bettef 

 present than this very handsome volume.' Yorkshire Daily Post. 



LONDON: THE RELIGIOUS TRACT SOCIETY. 



