ANTHOZOA HYDROIDA. 81 



and be troubled, though the mountains shake with the swell- 

 ing thereof/^ "Troubled on every side, yet not distressed ; 

 perplexed, but not in despair ; persecuted, but not forsaken ; 

 cast down, but not destroyed." 



Some of those zoophytes which, when matured, success- 

 fully combat the waves, cling to the rock when they are 

 young and tender, creeping along its surface. He who 

 made them teaches them thus instinctively to consult their 

 safety. And He who cares for the infant zoophytes, much 

 more cares for the lambs of his flock, gathering them with 

 his arm, and carrying them in his bosom. Oh ! let them 

 cleave to him in the season of youth, and then, being rooted 

 and grounded and stablished in the faith, should days of 

 darkness and of danger come, he will either hide them in the 

 hollow of his hand, or should he call them to the hottest of 

 the fight in the high places of the field, he will fit them for 

 the conflict, and make them even more than conquerors. 



Some of the hydroid zoophytes are unclothed, but most 

 of them have their bodies invested in a horny sheath, which 

 is called the polypidom, i.e. the house of the polypes. They 

 differ much in form, but there is great beauty in all the 

 varieties of their structure as well asi of the sculpture of 

 cells and vesicles. They are generally branched and jointed, 



G 



