558 THE TUBULARIAN HYDROID. 
behind him, we then measured them in the same manner, and found them rather more than 
fourteen times the length of the oar, thus covering a space of some hundred and twelve feet.’’ 































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































TUBULARIAN HYDROIDS.—Tubularia indivisa. 
This sounds so marvellous it may be taken as an exaggeration, but the facts are rather 
understated than otherwise. We may well regard such creatures with caution and dread for 
their stinging powers. 
