500 



The Inconstancy of Fasciafcd Races. 



In races of this kind all conditions of the environ- 

 ment are of importance. By crowding, the proportion 

 of fasciated individuals can be reduced, for instance, from 



Fig. III. Agrostemma Githago. 

 A plant the main axis of which 

 had been cut off at o. The cotyl- 

 edons have dropped off at C and 

 C. Their axial twigs are fasciated, 

 and instead of producing decussate 

 leaves, bear multiple whorls. They 

 split occasionally at the nodes, 

 forming forks with branches at 

 (/, b, c, d, e and /. Just above f the 

 calyx of the flower is spiral (kk), 

 and fused with the uppermost fo- 

 liage leaf (b), by which the flower 

 stalk is seen to be twisted. (1892.) 



40 to 5%. Even if the number of fasciations is calcu- 

 lated per area of the bed, a small number of specimens 

 give a prospect of obtaining more- fasciations than a 



