152 



Atavism. 



but the differences were not greater than the extent of 

 the experiment would lead us to expect. There were 

 1033 offspring from the average seed-parents and 732 

 from the ten worst plants. The two separate cultures 

 which deviated most from the mean contained 37% and 

 65% atavists respectively. The value of 52% given 



Fig. 27. Plantago lanceolata ramosa. A, B, C, three 



branched ears. 



above for the same generation but grown in 1900, will 

 be dealt with below. 



Bud-variations occur in this as in the inconstant races 

 of other species, although very rarely. In such cases it 

 is one or several lateral rosettes which vary. The struc- 

 ture of our plant is a very simple one. The stem of the 



