CHAPTER VIII. 
BOTANY OF PAL/EOZOIC ROCKS. 
Difficulty of determining between the Strata of older Rocks. 
Instance from North Devon. Devonian System. Silurian. 
Cambrian. Paucity of Organic Remains. Plants in the old 
Red Sandstone. In the Silurian and lower Rocks. Sea-Weed, 
Ancient and Modern. Earliest appearance of Life, and remarks 
on its Character. 
“ Or speak to the earth and it shall teach thee; 
And the fishes of the sea shall declare unto thee ! 
Who knoweth not in all these, 
That the hand of the Lord hath wrought this ?” 
Job xii. 8, 9. 
After lingering so long amidst the col¬ 
lieries the remainder of our geological tour 
will be but brief. We set out from London 
purposing to reach the picturesque outlines 
of the grantic ridges. Ere we arrive at these, 
we have still to traverse a vast extent of hard 
sandstone and slate country, lying on the 
