STUDY OF THEM INDISPENSABLE. IH 
Other families, both of animals and vegetables, 
aie united to particular formations, there being 
entire groups ceased to 
chart? different 
observlrt r. *' '^dl 
It r™ “f «“ earth, *i,h 
oat applying minute attention to the e -n 
aWud thau to uiKlertake to write the hkto^J 
any ancient people, without reference to tZ 
docninenta afthrded by their medals and ZZ 
Mineralogf .letl"*^’ “ " 
‘■-inorgSi; matter of 
i-«u,ar,y:tr:;,tttdt:::t"^ 
eomposition is ! ™«l«lty of mineral 
posuion IS but an uncertain nroof nf . 
temporaneous origin while ^ ^ 
t) ’ while the surest test of 
•aceous deposits”orth°'r England constitutes the aro-il- 
of their Organic rem • Grossier; whilst the resemblance 
•o hwe b«„ HoTar' >’7''!“/'"= t"‘o<l of ihei, dop„.i,io„ 
the differenM i„ .1., 
