168 



From these results the author concludes, that in describing the 

 minei'al, Dr Thomson must have been under some misapprehension 

 in regard to its true composition, and consequently that the name 

 he has imposed upon it must be laid aside. 



4. An Explanation of the Aristotelian Expression Msra ra 

 Ouff/xa, with some inferences from the Explanation. By 

 the Venerable Archdeacon Williams. 



