TO CORRESPONDENTS. 



The Communications from the Rev. Mr. Bronwin and from Mr. 

 Ha WORTH will appear in our next Number. 



*#* The Editors request that all Communications intendedjbr immediate 

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

 Red Lion Court, Fleet Street, London, at Jiaihest by the \5ih day of the 

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



DALTON'S CHEMISTRY. 

 Just Published, price lOi. 6d. boards. 



ANEW SYSTEM OF CHEMICAL PHILOSOPHY; Vol. IL (Part 

 First) containing the Metallic Oxides, Sulphurets, Phosphurets, 

 Alloys, &c. <S:c. By John Dalton, F.R.S. President of the Literary and 

 Philosophical Society, Manchester. 



Printed for Geo, Wilson, Essex-street, Strand, London : of whom may 

 also be had. Vol. I. (of the same work,) Part First, 7^. in boards ; Part 

 Second, 1 Os. 6d. 



TO GEOLOGISTS, COLLECTORS, &c. 



Just published, 



TWO FINE LITHOGRAPHIC QUARTO PLATES, containing 

 Varieties of that beautiful Fossil the Trilobite commonly called the 

 " Dudley Locust," engraved by G. Scharfand printed by Hullmandel. 

 With each Pair of Prints will be given 3 quarto pages of letter-press de- 

 ■criptive of the Animal, and a List of the Fossils found in the Neighbour, 

 hood of Dudley. Price 2s. each on India paper ; 1*. 6d. each plain. 



Published by W. Philhps, George Yard, Lombard Street, London ; and 

 J. Payton, Dudley ; of whom maybe had a fine Lithographic Folio Plate, 

 engraved by G. Scharf, of the magnificent Stone Lily, or Lily Encrinite, 

 found in the Transition Limestone at Dudley in 1825, and now in the 

 Museum of the Geological Society. Large paper 3s. 6d. ; small paper Ss. 

 each. 



