616 



January 31st. — Extract from a Letter addressed by Sir John F. W. 



Herschel, K.C.H. F.G.S., to Mr. Lyell, On Internal Temperature. 



On the Mines of Huantaxaya, in Peru ; by Mr. Bol- 



laert. 



On Submerged Peat Bogs and Forests near Poole ; 



by the Rev. W. B. Clarke, F.G.S. 



