TO OUR READERS AND CORRESPONDENTS. 



Several papers have been received, but are necessarily postponed to 

 our next Number. 



We regret that the Appendix to Dr. Ure's paper on Opium reached us 

 too late for insertion in its proper place ; it shall appear (in the pre- 

 sent volume) in our July Number. 



Want of time has prevented our compliance with Mr. Herapath s 

 request. 



F. R. S. is informed, that an excellent abstract of the papers read to 

 the Royal Society is given weekly in the Literary Gazette. 



The letter of Aquarius remains for consideration. 



