THE needle's *:ye. 
547 
red compact felspar, and also by veins containing quartz, 
lieavy-spar, copper-pyrites, and copper green. 
The rocks of the Needle's Eye and the neighbourhood, 
afforded to the active and enterprising mind of Sir James 
Hall proofs in favour of the Huttonian theory of the 
Earth ; to me they were interesting as illustrations of the 
doctrine of contemporaneous formation. 
