THE SNAP-DRAGON FAMILY 371 



(4) The fourth question stated above may be termed 

 Weismann's problem. It has caused more discussion than any 

 other Darwinian question, and has divided evolutionists into 



Fig . 122. Veronica speciosa (i nat. size). 



two camps. It is by no means solved as yet, though at times 

 we feel that we have a glimmering of the solution. 



These, and other similar problems, are of the highest interest 

 to biologists, and not without their bearing on human life, but 



