183 
These alternated with decomposing beds of the same 
material, now perfectly soft, and embracing still some unde- 
composed fragments of the rock. 
Toward the upper portion of the Ridge, the stratification 
was generally less obvious; the rock had all the appearance 
of Columnar Trap. Yet even here a careful examination of 
the weathered surfaces showed in many places distinct lines 
of stratification. These were at some points quite numerous, 
and in some instances, where the Columnar character was 
very marked, distinct veins of crystallized material could be 
seen for long distances preserving the horizontal outcrop and 
general dip of the series. Kven on the very top of the ridge 
the same features were observed; so that a distinct lamina- 
tion pervades the mass and seems to indicate the sedimentary 
character of the whole. 
He did not feel willing to pronounce confidently upon the 
brief examination of a couple of days, but felt sure that the 
facts were worthy of a very careful study, and hoped that 
the geologists of the Lyceum would bestow some attention 
upon this mteresting and suggestive locality. 
Pror. C. A. SEELY called attention to the fact, that in 
such cases as the present mistakes might arise from the mode 
in which the chemical analyses had been made. The 
common custom was to boil the finely-powdered mineral in 
Nitric or Nitro-muriatic acid, and all which did not dissolve 
under such circumstances, to set it down as Silica. Now it 
was well known that many of the Silicates would not be 
broken up under such circumstances and therefore any such 
analysis would be totally inaccurate. For his part he did 
not see why Felspathic Sandstones could not exist as com- 
monly as truly Silicious ones. 
THE PRESIDENT replied that the question was not as to 
whether Felspathic Sandstones could occur, as they certainly 
occasionally did, although they were extremely rare, but as 
whether in this particular case the Sandstones in question 
had been derived from the Trap. An examination to 
