TO OUR READERS AND CORRESPONDENTS. 



A complete General Index to the first Twenty Volumes of this 

 Journal is preparing for publication. 



An anonymous Communication from Portsmouth cannot be 

 inserted. 



" A Chemical Student" will find the difficulty to which he 

 alludes fully explained in our Review of Dr. Thomson's " At- 

 tempW &c.' 



Communications have reached us from Dr. Wilson, Dr. Mac 

 Culloch, Mr. H. Burns, Mr. Swainson, and Mr. Wells : these 

 have of necessity been deferred. 



We are quite willing to listen to all reasonable suggestions 

 respecting the improvement of this Journal, but the complaints 

 of " a Mechanic" are without foundation .• we must remind him, 

 that " ex nihilo, nihil fit." Had we blazoned forth, as did some 

 of our contemporaries, either of* the schemes to which our friend 

 alludes, we should have deservedly incurred the blame of hasti- 

 ness and credulity. 



The reports alluded to by F. R. S. are false, as relating to 

 the Royal Institution, and very far from correct as concerning 

 the Royal Society : upon such grounds, we decline publishing his 

 letter: to shew that no other feeling prevails, we shall be happy 

 to insert it in our ensuing number, provided he will allow us to 

 attach a commentary of our own. 



The review of a work inquired after by our correspondent at 

 Warwick will probably appear in our January Number. 



We are apprehensive that the communication with which we 

 have been favoured by " a Regular Reader" respecting the 

 manufacture of chloride of lime, would not be intelligible with- 

 out a drawing. 



Mr. Brande and Mr. Faraday mil commence the 

 Lectures and Demonstrations in Chemistry in the Laboratory 

 of the Royal Institution, on Tuesday Morning, the llth of 

 October, at nine o'clock precisely. 



A Prospectus may be obtained at the Royal Institution. 

 (See page 203.) 



