68 THE WORLD OF THE SEA. 
up the deposits of centuries, and formed of them these mighty 
masses. The species which are living to-day, are silently preparing 
in the bosom of the ocean wrought stone for the works of future 
generations. 
“Tt would be unreasonable to despise these animals, since the 
Almighty has compensated for their size and insignificance by 
granting to them such strength and industry. He has shown in 
this way that there is greatness in the least as well as strength 
in the weakest things. Let us learn, then, to admire the Creator 
in the meanest of his works.” (Tertullian.) 
