108 Answer to Dr. Hare’s Letter. 
lations and age of this group might be satisfactorily fixed and de- 
termined, and showing that it does not belong to the usual salif- 
erous series, the new red sandstone. How far this is an anomaly 
may be judged from the facts, that in England, ‘neither rock — 
salt nor salt springs occur in the middle or lower members of the 
new red sandstone ; and hence the term ‘saliferous,’ as applied to 
the whole system, dppenis objectionable, since the marls in which 
the salt lies, constitute only the upper portion of the mass,” con- 
sidered “as the new red system.” “In certain parts of Germa- 
ny, salt appears to pervade the underlying bunter sandstein ;” 
“in other tracts of central Europe, it abounds in tertiary strata, 
( Wielitzke, in Poland.) At Cardona, in Spain, it is found in rocks 
of the age of our green sand; in the Austrian Alps, it has been 
shown by Prof. Sedgwick and Murchison,.to occur in limestone 
of the oolitic system; whilst in many countries, including Eng- 
land, saline springs occasionally burst out from the carboniferous 
and older systems of rock.” —Murchison, Silurian Syst. p. 32. 
- The Report on the Geological Survey of N. York for 1839-40, 
being public document 50, came too late for notice in the present 
number. 
Arr, XIV. —An answer rf Dr. Hare’s Letter on te Theoret- 
, ical opinions ; by M. Farapay.* 
My Dear Sir—i. Your kind remarks have caused me very 
carefully to revise the general. principles of the view of statie 
- induction, which I have ventured to put forth, with the very nat- 
ural fear that as it did not obtain your acceptance it might be 
founded in error ; for it is not a mere complimentary expression, 
when I say, I have very great respect for your judgment. As 
the reconsideration of them has not made me aware that they 
differ amongst themselves or with facts, the resulting impression 
on my mind is that I must have expressed my meaning imper- 
* Royal Institution, April 27, 1840. 
emen—Can you add to the favors I am already under by inserting in your 
Sura id ig Rd to Dr. Hare’ s letter addressed to me and published in your ex- 
: n, your obliged servant, M. Farapa¥. 
“tei on Ae Jounal Sian and Arts. - 
