36 SCIENTIFIC CATALOGUE. 



Wil S Qn— continued. 

 THE PROGRESS OF THE TELEGRAPH. Fcap. 8vo. \s. 



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



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



uttei-ance. " — Nonconformist. 

 I 



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. 8vo. 14s. 



The author having for long investigated Nature in many directions, 

 lias ever felt unsatisfied with the physical foundations upon which 

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

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

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 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, aiuT 

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

 The subjects of the eleven chapters are : — I. "Space." II. "Matter." 

 III. "Inertia, Force, and Mind." IV. "Molecules." V. 

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

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

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

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

 "Deserves tltoughtful 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, r.R.S. Crown 8vo. ds. 



' ' The discourse, as a resume of chemical theory and research, unites 

 singular luminousness and grasp. A feiu judidous notes are added 

 by the translator."— ?aXi Mall Gazette. " The treatment of the 

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 most evidently." — Westminster Review. 



