-26- 



value is that from the first test, the lest is that from the 



second test, and the second is the average of the first and 



o 

 last. Thus, for type I, 31 C (see also table I), culture 



R5S2 gave a mean hourly rate of shoot elongation of .69 ram. 



by the first test and .73 ram. by the second test, the average 



for both tests being .71 mm. V/hen no data are given in table 



II for any temperature and type this means that no solutions 



fulfill the requirements here taken as defining the best 



soliitions. 



