PRICKLES AND 
POISON 
EAVES need to 
protect themselves 
from other enemies than 
too great heat and too 
much water. 
We found that the prickly 
armor of the thistle enabled it to 
live in pastures where the cattle had 
killed most of the other plants. 
Many animals like to eat green 
leaves, so we are not surprised to 
find that plants invent different 
ways of protecting themselves. 
One look at the leaf of the thistle 
is enough to persuade us that it Awa 
would not be very good eat- —,~ Si \\ i Wi Wy NN Beggs 
i 
ing. 
LAW Ne Wy) My y, 
The red-berried holly, SAA SG “ ae 
with which we decorate ~—2= AN a << 
our churches and 
“aa Wiwes uN 
SSN \\ x SS 
