TO CORRESPONDENTS. 

 The Rev. P. Keith's Paper " On the Susceptibilities of Living Struc- 

 tures," is intended for early insertion. 

 Simplex in our next. 



It is our intention at the end of the present volume, to publish a Sup- 

 plementary Number, containing a General Analytical Index to the 

 first ten volumes of the New Series of the Philosophical Magazine and 

 Annals of Philosophy. 



•»* The Editors request that all Communications intended Jbr immediate 

 insertion may be sent to the care of Mr. Richard Taylor, Printing Office^ 

 Red Lion Court, Fleet Street, London, at Jurthest by the 15th day of the 

 month, or they xoill be too late to appear in the ensuing Number. 



Just published, in Royal Octavo, Price 10s., or, on Coloured Paper, 

 Price 125. (Second Edition.) 



TABLE OF LOGARITHMS OF THE NATURAL NUMBERS 

 from 1 to 108,000. 

 By CHARLES BABBAGE, Esq. 

 Lucasian Professor of Mathematics in the University of Cambridge, 

 F.R.S. &c. &c. 



Printed for B. Fellowes, Ludgate-street ; of whom may be had, by the 

 same Author, 



Reflections on the Decline of Science in England. 8vo. 

 Price 7s. 6d. 



A Comparative View of the Different Institutions for 

 THE Assurance of Lives. 8vo. Price 10s. 6d. Also, 



Tables of Logarithmic Sines, Co.sines, Tangents, and Co- 

 tangents, to accompany Mr. Babbage's Table of Logarithms. 

 Royal Octavo. Price 12s. 



Just published. Price Is. 



A SYLLABUS OF A COURSE OF EXPERIMENTAL LEC- 

 TURES ON THE THEORY OF EQUILIBRIUM, to be de- 

 hvered at Kmg's College, London, in the October Term of the Year 1831. 



By the Rev. H. MOSELEY, 

 Professor of Natural and Experimental Philosophy. 



Printed for B. Fellowes, (Bookseller and Publisher to the College,) 

 39 Ludgate-street. 



