CONTENTS. 
VIII. On the Form of the Integrant Molecule of Carbonate of Lime. 
By David Brewster, LL.D . F.R.S. Lond. Ed. Member of the 
Geological Society ------ P* 
IX. Description of some new Fossil Encrini and Pentacrini , lately dis- 
covered in the neighbourhood of Bristol By George Cumberland, 
Esq. Honorary Member of the Geological Society - - p. 87 
X. On the Limestone Beds on the River Avon , near Bristol ; with a 
Description of the Magnesian Beds that repose on their basset edges » 
By George Cumberland, Esq . 8?c, 8fC. - - - p. 95 
XI. On the Strata of the Northern Division of Cambridgeshire . By 
Francis Lunn, Esq. In a Letter addressed to G. B. Greenough, 
Esq, President of the Geological Society - - - p. 114 
XII. Memoir on the Geological Relations of the East of Ireland . By 
Thomas Weaver, Esq. Member of the Royal Irish Academy , of the 
Wernerian Natural History Society , and of the Right Honorable 
and Honorable the Dublin Society - - - p. 117 
XIII. On the Modifications of the Primitive Crystal of the Sulphate pf 
Barytes. By William Phillips, Esq Sfc. 8>c. - - p- oOj 
