Pond Life 
in every horse-pond, there is no disputing 
the fact. And as all life began in the 
water—for the water was peopled with 
living things long before anything walked 
on the land—this step of the tadpole out 
of the water on to dry land as an air- 
breathing frog is doubly interesting, 
showing us how this important change 
was first made. How important it is we 
may realize for ourselves by considering 
the abundance and variety of living 
forms which now inhabit the dry land, 
none of which could have existed in thetr 
present shape uf such a change had never 
been effected. 
And this also opens up another point 
of interest ; because it is supposed that 
each creature in its own life-history goes 
through the changes which have been 
’ made by its far-away ancestors in the 
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