182 



K. S. LASHLEY 



TABLE 14 



Constants for the number of tentacles of the buds produced by clones A and D 

 during successive five-day intervals from June 25 to August 2S 



5 show the result of this analysis. Throughout the entire experi- 

 ment the difference between the clones persisted. By July 25 

 Clone D had increased in the average number of tentacles of 

 its buds until it equaled the earlier average of Clone A (June 30) 

 but this was accompanied by a corresponding increase in the 

 average of Clone A. The figure shows that the difference re- 

 mained fairly constant in spite of wide fluctuations in the absolute 

 values of the means of the clones. 



Other differences between the clones. There is a marked differ- 

 ence between the clones with respect to the age at which repro- 

 ductive maturity is reached, the age at which the parents produce 

 their first bud. This is shown in the following tabulation: 



Clone A 



Clone D 



Difference (A — D) 



Mean age of pare/Us when 

 first bud was produced 



4. 806 ±0.103 days 

 3. 748 ±0.074 days 

 1.058±0.127 days 



The rate of reproduction of the clones differed slightly, that 

 of Clone A being somewhat greater than that of Clone D. The 

 difference, based upon 33 parents of each clone which produced 

 more than 10 buds is 0.0542 buds per day. This difference is 



