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 varv. The struc- 
ff 
ture of our plant is a very simple one. The stem of the 
