36 SCIENTIFIC CATALOGUE. 



continued. 



THE PROGRESS OF THE TELEGRAPH. Fcap. Svo. is. 



" While a complete view of the progress of the greatest of human 

 inventions is obtained, all its suggestions are brought out with a 

 rare thoughtfulness, a genial humour , and an exceeding beauty of 

 utterance. " Nonconformist. 



Winslow. FORCE AND NATURE : ATTRACTION AND 

 REPULSION. The Radical Principles of Energy graphically 

 discussed in their Relations to Physical and Morphological De- 

 velopment. By C. F. WINSLOW, M.D. Svo. 14*. 



The author having for long investigated Nature in many directions, 

 has ever felt unsatisfied with the physical foundations upon which 

 some branches of science have been so long compelled to rest. The 

 question, he believes, must have occurred to many astronomers and 

 physicists whether some subtle principle antagonistic to attraction 

 does not also exist as an all-pervading element in nature, and so 

 operate as in some way to disturb the action of what is generally 

 considered by the scientific world a unique force. The aim of the 

 present work is to set forth this subject in its broadest aspects, and 

 in such a manner as to invite thereto the attention of the learned. 

 The subjects of the eleven chapters are : 7. ' 'Space. ' ' II. " Mattel'. ' ' 

 III. " Inei'tia, Force, and Mind." IV. tl Molecules. " V~ 

 " Molecular Force." VI. " Union and Inseparability of Matter 

 and Force.' 1 '' VII. and VIII. "Nature and Action of Force 

 Attraction Repulsion." IX. " Cosmical Repulsion. X. " Me- 

 chanical Force." XI. ''Central Forces and Celestial Physics." 

 "Deserves thoughtful and conscientious study." Saturday Review. 



Wurtz. A HISTORY OF CHEMICAL THEORY, from the 

 Age of Lavoisier down to the present time. By AD. WURTZ. 

 Translated by HENRY WATTS, F.R.S. Crown Svo. 6s. 



" The discourse, as a resume of cJictnical theory and research, unites 

 singular luminousness and grasp. A few judicious notes are added 

 by the translator." -Pall Mall Gazette. " The treatment of the 

 subject is admirable, and the translator has evidently done his duty 

 most efficiently." Westminster Review. 



