ZOOPHYTES 



calcareous element here, as you will see when I extract a 

 small portion of it, and, laying it on a slip of glass, treat 

 it with caustic potash. The microscope now reveals a large 

 number of spicula, far larger than those we have hitherto 



SPiCULA OP COW'S-PAP. 



observed, and different from either sort in form. These 

 resemble very gnarled branches of oak, with the branch- 

 lets broken off close to their origin, leaving ragged and 

 starred ends. 



