PHILOSOPHICAL MAGAZINE AND ANNALS OF PHILOSOPHT. 



During its progress, too, Mineralogy and Geology have 

 acquired an importance which they never before pos- 

 sessed; and the results of this importance are manifested 

 in the numerous valuable contributions on those subjects 

 that enrich its pages. And within the last few years 

 especially, some of the first Naturalists in this country 

 have furnished papers in their respective departments of 

 knowledge; whilst a series of memoirs on Astronomical 

 subjects, and on the application of Mathematics to Phy- 

 sical Investigations, have, it is presumed, tended mate- 

 rially to raise the character of this Journal. 



The Annals of Philosophy also first appeared at an 

 interesting epoch in the history of experimental research, 

 when the genius of Sir H. Davy and his fellow-labourers 

 in the same field had greatly extended the boundaries of 

 Chemical Philosophy, by employing the decomposing- 

 powers of the voltaic battery : and the succeeding acces- 

 sions to the science have been announced in this journal 

 with the fidelity due to their importance. The doctrine 

 of definite and multiple proportions in the combination of 

 bodies had also just been developed to a certain extent, 

 and to this very interesting department of Chemistry the 

 pages of the Annals afford many contributions, and like- 

 wise exhibit a general view of its history. 



The objects of both Journals being similar, the Editors 

 of the Neiu and United Series now announced, conceive 

 that they shall more efficiently serve the cause of Science 

 by combining their labours, and presenting them in a 

 concentrated form ; by this co-operation a single work 

 will not only contain the more important original Com- 

 munications, but the accounts of foreign science and the 

 proceedings of learned societies, hitherto divided be- 

 tween two journals, or given in both, will be found in 

 one publication. 



In acknowledging the favours of their respective Cor- 

 respondents, the Editors earnestly request a continuance 

 of them as the best means of insurino^ their future sue- 

 cess ; with a view to which, they have also made arrange- 

 ments for introducing material improvements in the New 

 Series, and particularly a regular account of scientific 

 discoveries both domestic and foreign. 



London, Nov. 1826. 



%* It is requested that all Communications for this Work may be addresjed 

 to the C^e of Mr. R. Taylor, Printing Office, Shoe-Lane, London. 



