ORIGIN OF LIMESTONE. Of) 
tjie general history of the origin of limestone, 
ni their affording strong evidence of the 
derivS carbonate of lime has been 
from fte ‘hemal springs, in volcanic districts, issue 
overspread lar^e r charged with carbonate of lime, as to 
or traCt ‘ofa, 
near Rome anJtLTT Lago di Tartaro 
Of -nscan;;“h~ ^-^ers 
the terLryperdTZL^et: 
inchJtetL°;;opr^^^^^^^ 
=~~SSH~-r 
referred it entirely to the secretions nf ^ 
orio-in to wViir'K . . nianne animals ; an 
calkreous strata which"^**^ obviously assign those portions of 
corallines; but until “”«™“nted shells and 
the power of 0^ ’^^^e 
thauhey d rh rh^Ir -ust suppose 
medium^f rplll T’ 
source whence t l o w 1 "' '' the 
bonate of lime for its animal'”*^ I ’ supplies of car- 
quantities of the same substance 'that’ha"^ 
in the form of calcareous strlta. ’ P’^^oipitated 
from the nwhan^'^T resulted, like sands and clays, 
because the mantL 
only remainincr 1 f^^oot among the derivative rocks. The 
introduced to lakiratr’* ''T continually 
S ch calcareous earth was disseminated. 
