FAMILIAR INTRODUCTION TO GEOLOGY, 
349 
waters of lakes and inner seas, and the flow of 
rivers, would have been precluded. What 
modifications of beauty, then, what combina- 
tions of utility every where challenge our admi- 
ration and love of His wisdom, power, and 
benignity who governs the universe ! 
'I'he following sketch represents tlie manner 
in which different classes of rocks are disposed. 
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DIFFERENT KINDS OF ROCKS AND SOILS. 
Vegetable soil 
Sand clay, gravel, with bones of animals of 
species which now exist 
Deep beds of gravel, large loose blocks, 
sand, containing bones of extinct animals. 
iSand, clay, pebbles, beds of hard white sand- 
stone, many sea shells, bones of extinct 
animals 
Alternations of limestones, with fresh-water 
shells, clays, and limestones containing 
marine shells 
Thick beds of clay, with sea shells ; beds of 
limestone, extinct species of plants and 
, fruits, land, and amphibious animals 
8 . 
10 . 
f Chalk with flints 
\ Chalk without flints 
r Chalk marl ; 
I Green sand 
•{ Thick beds of clay 
j Yellow sand, with beds of iron ore . . . . 
(.Argillaceous sandstone 
r Limestones 
j Beds of clay 
j Limestones with corals . 
I Beds of clay 
I Thick beds of limestone 
I Thin beds of limestone and slaty clay . , 
Red marly sandstone 
11. Limestone containing magnesia 
{ Coal measures, containing various seams of 
coal, beds of ironstone, clay, sandstone, 
and freestones 
13. Coarse sandstone and slaty clay . . . 
14. { 
Thick beds of limestone, and slaty clay and 
sandstone alternately 
15. Dark red sandstone, with beds of pebbles. . 
r Thick beds of slate and sandstone, occasion- 
16. -I ally impressions of shells, with thick beds 
of limestone 
Slates and hard rocks alternating, in which f 
no trace of animal remains have been 
found 
(To be continued.) 
