CONTENTS. 



II. 1. Some Observations on a Note of M. A. Van Beek, 



purporting to point out an Error in the Bakerian 

 Lecture of the late Sir Humphrey Davy *' On 

 the Relation of Electrical and Chemical Changes." 

 2. Some Observations on Euchlorine, relative to the 

 Question of its Decomposition. By John Davy, 

 M. D., F. R. S., Assistant Inspector of Army Hos- 

 pitals. Communicated by the Author, through Sir 

 James Macgrigor, - - - Page 42 



III. Remarks on the Remains of a very large Oak Tree, 



dug from a Peat-Moss near Lanfine, Ayrshire; and 

 on the Ancient Caledonian Forest in the West of 

 Scotland. By T. Brown, Esq. F. R. S. Ed., 

 M. W. S. Communicated by the Author, - 53 



1. Remarks on the Oak Tree, - - - ib. 



2. On the Ancient Caledonian Forest in the West of 



Scotland, . ... - 57 



IV. Historical Account of Experiments regarding the In- 



fluence of Colour on Heat, the Deposition of Dew, 

 and Odours. By James Stark, M. D. Edinburgh. 

 Communicated by the Author, - -65 



1. On the Absorption of Heat by differently Coloured 



Substances, - - - - - 75 



2. On the Radiation of Heat by differently Coloured 



Substances, - - - - - 77 



3. On the Influence of Colour on the Deposition of Dew, 82 



4. On the Influence of Colour on Odours, - - 83 



V. On finding the Dew- Point, &c. from the Cold induced 

 by the Evaporation of Water. By H. Meikle, 

 Esq. Communicated by the Author, - 98 



VI. Observations on the Loamy Deposit called " Loess" 

 of the Basin of the Rhine. By Charles Lyell, 

 Esq. F, R. S. Foreign Secretary to the Geological 

 Society, &c. Communicated by the Author, 110 



Vll* On the Theory of the Elevation of Mountain Chains, 

 as advocated by M. E^ie de Beaumont. By Dr 

 Boue'. Communicated by the Author, - 123 



VIIL An Attempt at a New Arrangement of the Ericaceae. 

 By David Don, Esq. Libr. L. S., &c. Communi- 

 cated by the Author, - * - 150 



