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JOHN F. FULTON, JR. 



vitality of the control specimens was slightly less; two died after 

 six days and one on the seventh. 



Experiment 5 — Air and moisture. Each of three specimens was 

 sealed in 100 cc. of air, as in the two preceding experiments. The 

 fact that in these experiments the bottles were sealed with water 

 prevented the excessive evaporation and consequent dryness 

 which resulted in experiment 2. In that experiment the greatest 

 longevity was eight days. The present experiment was com- 

 menced on July 15th at 9:00 a.m., and at 12 m., July 26th (when 



TABLE 1 



Showing length of life of Actinia bermudensis under various environmental 



conditions 



the experiment had to be discontinued) , all three of the actinians 

 were still alive and appeared normal in every respect, having 

 lived in a sealed bottle for eleven days. 



The control experiment was discontinued at the end of the 

 seventh day; there was no indication, however, of decreased vital- 

 ity as a result of the darkness. Table 1 gives in brief the results 

 of the experiments just described. 



What deductions can be made from these experiments? Let us 

 examine first the conclusions which have been reached by previous 

 investigators. 



