2 BULLETIN 294, U. S. DEPAKTMEXT OF AGRICULTURE. 
Emphasize tlie desirability of communities restricting themselves 
to one kind of cotton. Place the above varieties under the following 
groups: (1) Big-boll group (see fig. 1); (2) long-staple group (see 
fig. 2); and (3) small-boiled early group (see fig. 3). 
Exercises. — Have six or more pupils bring all the varieties of cotton 
mentioned in this lesson they can find at home or in the neighbor- 
FlG. 1.— Triumph. 
hood. These samples should be used in studying the shape of plant, 
size and shape of bolls, and relative earliness and colors of seed. 
Have the pupils report in writing the opinions of several farmers as 
to which varieties are thought to make the largest yields of but. 
Before the pupils attempt to select the most desirable plants from 
which to select seed for the next year's crop, have them read the 
