THE STUDY OF TREES. 271 



These grains with their bladders are too small to be 

 seen with the naked eye, but the teacher should take some 

 trouble to obtain the young male and female cones in 

 season and to let the pupils examine them. 



Let the pupils write out as many facts as they are 

 familiar with which show how the wind is a great maker 

 of seed and a planter of trees. 



