60 



THE WATER-BALANCE OP SUCCULENT PLANTS. 



A number of records on various dates from January 6 to August 1, 

 1909, are given in table 19. 



Table 19. 



*20 fruits still present. 



It is to be noted that this plant followed the behavior of No. 6 in its 

 excessive rate of transpiration during- the first six months after being 

 brought in. The data for several periods appear in table 20. The rate 

 during March was almost double that of February. 



Table 20. 



On October 16, 1909, the weig-ht was 34.040 kg., indicative of a loss of 

 710 grams in 76 days, at a daily rate slightly greater than 9 grams; 20 

 fruits were present, but 2 were dried out and were removed after weigh- 

 ing. The two dried fruits weighed 12 grams, which would make the total 

 weight of the preparation for further observations 34.028 kg. 



Great numbers of greenish adventitious roots had risen around the base 

 of the old dried roots. These were so thickly placed in areas of several 

 square centimeters as to cover the surface completely. 



