es | > a oe ash ce ee og NO FF ee Se a a ale to 
ie : ? = i Se taeda a By f 
. ‘ + ee < i 
418 Scientific Intelligence. 
length of the state. Six of the sections including one drawn across 4 
portion of Massachusetts just south of the Vermont line, cross this smaller 
rock” which Dr, Emmons places at the base or low down in his Taconic 
series. In the opinion of the Vermont surveyors it rests upon the gneiss 
The specimens have all the characters of the purely quartzose nae 
acephalous bivalve, similar to Modiolopsis. Such facts are highly inter 
esting : i 
known fossils of the Potsdam sandstone occur with the rocks just in 
and a part in the Medina sandstone. 
it 
on ps of fossil — 
hav “Ne carefully figured. A Scolithus very much i “Modialty 
ape ee 
