xlviii FOURTH REPORT 1834. 



Tough, Rev. Mr. On a Glass Celestial Sphere. 



Traill, Professor. On the Laryngeal Sac of the Reindeer. 



■ On the Geology of the Orkneys. 



On the Fossil Fishes of the Orkneys. 



Trevelyan, A. On the application of Vapour of Alcohol to the 

 purpose of a chemical Lamp Furnace. (See Phil. Mag, 

 1834.) 



Trevelyan, W. C. On Fossil Wood from Faroe. 



On the Geographical distribution of Plants in Faroe. 



Turner, Dr. E. On Atomic Weights ; that they are not repre- 

 sentable by whole numbers. 



West, William. On the presence of Sulphur in Bar Iron. 



Whevvell, Rev. W. A Lecture on certain Phfenomena of the 

 Tides, delivered at an Evening Meeting of the Associa- 

 tion. 



Suggestions regarding Sir J. Herschel's explanation of Di- 

 spersion according to the Undulatory Theory. 



Williams, Dr. C On the State of Knowledge regarding Sound. 



On the Phaenomena of Low Combustion. 



Wilson, J. On the Coleopterous Insects of Sutherland. 



Yates, Rev. J. On some facts regarding the Stratification of 

 Primary Rocks. 



