Xo. 620] GIGAXTISM IX XK Oil AX A TA IL 1 ( VM 227 



total of 60 plants was grown from the Mammoth mother 

 plant, no. 12 (a), all of which were of Mammoth type, with 

 an average height of seven to seven and a half feet. On 

 September 11 a few of the tallest plants were eight feet 

 in height. On this date an average of 50 to 55 leaves had 

 been produced and none showed any evidence of blossom- 

 ing. A progeny of 60 plants (see row 38 A, 1917) was 

 also grown from the Mammoth mother plant, no. 12 (b). 

 On September 11 these plants averaged six and a half to 

 seven feet in height and resembled the progeny of no. 12 

 (a) in all respects except that they were not quite as tall. 



From the mother plant, no. 12 (c), which was one of 

 the late blossoming plants, producing an average of 35 

 to 40 leaves, 49 plants were grown. On September 13 

 the heights of 48 of these plants and their blossoming 

 habits were noted as follows : 



TABLE IV 



LECTED FROM CLASS 2, OF TaHLE III 



111 tins i.iooviiy of 4!) plants it is evident that 14 plants 

 jiossessed Mammoth characteristics of contiimous growth 

 and showed no evidence of blossoming, while 35 plants, 

 some of which were of giant stature, blossomed. From 

 the late l)lossoming mother plant, no. 12 (d), a progeny 

 of 48 plants was grown. The heights of 42 of the^e plants 

 were also measured on Se])toiiiher 13 and tlioir l)lossoming 

 habits noted as follows : 



