36 BY THE DEEP SEA. 



have seen in the large numbers of attacked shells I have 

 broken ; neither am I prepared with an opinion as to the 

 creature that did make them. I believe that on this matter, 

 as on many others connected with natural history, we have 

 much still to learn, and every student of Nature should have 

 his eyes and his mind ever open to receive hints from Nature 

 herself as to her methods. One of these days, some lonely 

 wanderer by the margin of the wave will show us how simply 

 this boring is accomplished, and we shall all wonder that we 

 never thought of the possibility before. But whatever views 

 or lack of views we may have upon the question, " who made 

 the burrows? " there is no doubt that the sponge does exist in 

 some of them, and its spicules embedded in the yellow sarcode 

 are well worthy of minute observation. 



