TO OUR READERS AND CORRESPONDENTS. 



THE Managers of the Royal Institution having determined 

 to publish a Quarterly Scientific Journal, more immedi- 

 ately under their own direction and superintendence^ the labours 

 and responsibility of the Editor of the present Journal cease 

 and conclude with this Number. 



We are sony we cannot make the arrangement in regard to incomplete 

 Papers, which a Correspondent suggests. 



Just published, in 2 thick Vols. 8vo., price 30*. 



A MANUAL of CHEMISTRY, Practical and Theoretical, con- 

 taining an account of all Recent Investigations and Discoveries. By W. T. 

 Brande, F.R.S. Professor of Chemistry at the Royal Institution, &c. &c. New 

 Edition, considerably enlarged and improved, with numerous Plates, Wood-Cuts, 

 Diagrams, &c. 



