eV 
have discovered that they dress their 
flowers in gay colors so that the bees 
may be tempted to visit them and pow- 
der them with golden dust. You have 
learned that they make their fruits juicy 
and delicious so that boys and girls and 
birds may be persuaded to carry off their seeds; and 
the better you know them, the more certain you feel 
_ that they manage their affairs with much common sense, 
that they are not likely to take time and trouble for 
nothing. 
So let us look closely at some of these air ships, and 
try to guess their errand. 
I hope that some time ago you were told to get together 
as many different kinds as you 
¢ ih) could find, and to bring them 
RY mY ly. here this morning. 
mI a In this picture you see some ot 
WAX” the. air ships of the milkweed 
(Fig. 49). 
The lower part of Fig. 48 is a seed- 
box of the milkweed:. To this: are 
fastened the silky threads which make 
the sail that carries the seed through 
the air with the least wind, just as the 
canvas sail carries the boat across the water. 
Can you think of some other plants that 
~ 
send abroad seed sailboats ? 
Perhaps some of you remember the beauti- 
FIG. 49 
ful pink or purple flowers which grew last 
summer in tall spikes along the road and up the moun- 
