A BIT OF SPONGE. 59 



whatever. So, too, the rocks are full of fossil-sponges, 

 many of quaint form. Our piece of sponge, as we may 

 understand, has yet other bits of history attached to 

 it which another day's talk may reveal. The break- 

 fast bell warns us that science in another form (that 

 of human nutrition) awaits our practical study. Mean- 

 while, think over the sponge and its ways, and learn 

 from it that out of the dry things of life, science weaves 

 many a fairy tale. 



