Table 4.--Steps in calculating number of days after May 31 
when certain percentages of Melanoplus differentialis 
had hatched 
Steps Calculations 
90-4 .4-15 .5-31.7-38.0=0.4 percent 
G-4x8=0.3; 0.3+23=23.3; 41-23.3=17.7 
80-4 .4-15 .5-31 .7=28.4 percent 
So xI=5 2: 5 .2416=21.2; 41-21.2=19.8 
SestxI=3 4 3.4+16=19.4; 41-19 .4=21.6 
8 4751.5; 1.5416=17.5; 41-17 .5=23.5 
38.0 
° 
50-4 .4-15 .5=30.1 percent 
3054.75 4.7+11=15.7; 41-15.7=25.3 
20 -5x5=3.25 3.2+11=14.2; 41-14.2=26.8 
sotS=1 63 1.6411=12.6; 41-12 .6=28.4 
0.1.5=0; O+11=11.0; 41-11.0=30.0 
hay) 
10-4=5.6 percent 
3-6,5=1.8: 1.846=7.8; 41-7.8=33.2 
155 
= ote 
