TIME AND CHANGE 
Dearest Nature, strong and kind, 
Whispered, ‘ Darling, never mind! 
To-morrow they will wear another face, 
The founder thou; these are thy race!’” 
I fancy Emerson would be surprised and probably 
displeased at the use I have made of his lines. I re- 
member once hearing him say that his teacher in 
such matters as I am here touching upon was Agas- 
siz, and not Darwin. Yet did he not write that 
audacious line about “the worm striving to be 
man”? And Nature certainly took his “little 
man” by the hand and led him forward, and on the 
morrow the rest of the animal creation “wore an- 
other face.” 
III 
In my geological studies I have had a good deal 
of trouble with the sedimentary rocks, trying to 
trace their genealogy and getting them properly 
fathered and mothered. I do not think the geologists 
fully appreciate what a difficult problem the origin 
of these rocks presents to the lay mind. They bulk 
so large, while the mass of original crystalline rocks 
from which they are supposed to have been derived 
is so small in comparison. In the case of our own 
continent we have, to begin with, about two million 
of square miles of Archean rocks in detached lines 
and masses, rising here and there above the prim- 
ordial ocean; a large triangular mass in Canada, 
and two broken lines of smaller masses running 
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