THE NEW KNOWLEDGE 



BY PROFESSOR ROBERT KENNEDY DUNCAN. 



Illustrated. 8vo, Cloth, 6s. net. 



" Professor Duncan has written a most lucid and interesting book for 

 those who wish to know something of the birth of matter, the decay of 

 matter, the nature of matter, of the nature of electricity and the relation 

 of electricity to matter, of the nature of the sun and the sun's rays, of the 

 possible cause of gravitation, the cause of clouds and rain, and the reason- 

 able solution of many another mystery. His book shows an admirable 

 power of exposition ... we have as yet seen no book so well adapted to 

 explain to the layman the meaning and the bearing of the latest researches 

 into the mystery of the universe." Spectator. 



" The man in the street, by the time he has finished the two hundred and 

 fifty pages of clear type here presented to him, will have a much more lucid 

 idea of the recent advance in physics and the conclusions to which it has 

 given rise than he can have at the present moment. The book is a great 

 improvement upon all previous attempts at its popularization that we have 

 seen. . . . The best of its kind we have read." Athenceum. 



" There is at the present no book on the market with the same aim which 

 gives the required information so well as does ' The New Knowledge.' . . . 

 The book is really extremely well done, and a book of this kind was badly 

 wanted. . . . The reader will rise from a perusal of these pages with a 

 very good idea of radio-activity, and of the theories to which its discovery 

 has given rise." Westminster Gazette.^ 



" Let nobody be discouraged by the title of ' The New Knowledge ' 

 which Robert Kennedy Duncan has given to a volume which sets out in 

 language which is plain-spoken and easily understood a good many of the 

 new views in chemistry and physics that the lately imagined anatomy 

 of the atom has created. His volume is one which can confidently be 

 recommended to that vast army of inquirers, who, not themselves being 

 scientific students of physics, are yet possessed of trained intelligence, 

 and who want a good book on the whole subject." Knowledge. 



" In a long experience of scientific exposition, both professional and 

 amateur, we have come across few more daring efforts than that of Pro- 

 fessor Duncan in the present volume. He has attempted a popular ac- 

 count of the new physics and the new chemistry in their relation to the 

 new theory of matter. It was a bold venture. But Professor Duncan 

 has succeeded, and told as much ot the new knowledge and its potentiality 

 on the coming thought as anv one not a professed scientist may desire to 

 know." Pall Mall Gazette. 



LONDON : HODDER AND STOUGHTON. 



