LET Us Now PRODUCE A 
New PINK DAISY 
A PracticAL Lesson IN 
HARNESSING HEREDITY 
N architect, in selecting the materials for his 
A structure, sends for limestone to Bedford, 
Indiana, or for marble to Carrara, Italy, or 
for bricks to Haverstraw, N. Y., or for redwood 
rustic to California. 
In the process of turning his blue print into a 
building, he draws on the whole world—a little 
here and a little there—for his supplies. 
So, too, in the production of a new plant on 
which we wish to try our architectural skill, we 
must first seek out the things with which to build. 
Only our search will be not a search for sub- 
stances, but a search for stored up heredities—not 
a search for bricks or stone or lumber, but a search 
for living traits. 
The sturdy dandelions in our vacant lots, with 
their parachute-like seed balls, reveal a structural 
[ VoLUME I—CuHapPTER V]} 
