112 MINERALOGiCAL QIJERIES. 



been able to determine with certainty to what 

 formation or formations they belong. 



5. Are the upper parts of the Lomonds in 

 Fifeshire, of Tinto in Lanarkshire, and of 

 the Eilden hills in Roxburghshire, composed 

 of rocks belonging to the newest flcetz-trap 

 formation ? 



From the general nature *of the rocks in Fife* 

 shire, and the conical shape of the Lomonds, it 

 is probable that they are composed of sand- 

 stone, and other older flcetz rocks, which are 

 caped with rocks of the newest floetz-trap forma- 

 tion # . The rather conical shape of Tinto, a hill 

 apparently situated in transition country, renders 

 it probable that rocks of the newest flcetz-trap 

 formation, form at least its upper part. The 

 Eilden hills have also somewhat of a conical shape, 

 are situated in transition country, contain com- 

 pact-felspar, and claystone, and hence they pro- 

 bably belong to the newer flcetz rocks. 



* Since the above query was proposed, I have visited 

 the Lomonds, and find, that the wester hill is principally 

 composed of sandstone, caped with basalt : the easter 

 hill appears rather to be caped with greenstone, but of 

 this I am not perfectly certain. 



