Analysis of Heterogeneity in the Population 



■--9 



^ 25 



^ 86 



^ 104 



7 4 3 



26 '^ WW 



28 -^ \^ 



44 <^ ^ i@--- -in 



39 4^ ^ 92 



;^:. 214 



(^ 119 



(^, 42 



(^ 11 



^ 4 



^ 1 



1203 Males. Total 2327. 



14 



26— til 

 51— 



42 -i^ 



31 -® 



20 -M 



/ 



/ ^—-2 

 / ^ 7 



^^ 34 



(^ jgj 



34 ^ ^^ 217 



^> 318 



^- 141 



^^ 12 



^^5 7 



1124 Femalea. 



paKn'a's'fTr^a'' observed"' generation at Chicago in 1906. showing the pronotal 



12 11 



14--^ \\^ 

 21—-^ Vg) 



56 ® ,^ ^^._ gg 



33 'W (^ 92 



11 '^^^ (^^ 171 



^ 314 



^- 211 



@#- 171 



1 7 4 « 

 ' / 



!5^— 86 

 1271 Males. 



6--^ ^/ ^.„. ^ 



41-—-^ ^- 174 



18 ^^ ^ 218 



326 



^ 211 



(^ 44 



Total 2568. 1297 Females. 



paftern^^^""^*'^^'' *°°"'''^ generation at Chicago in 1907, showing the pronotal 



11 7^ 

 /iSf^ ^ \ ^t!ll^^— 17 



5 - -'^5?) >. \ rr~ 



9 ---^^ .^^ ^^^ 



-27 <?W^ '^ £^ 



41 (^ ^. 



8 i^s ^, ^^^ 



'^ 176 



^fU). 144 



^W0) -107 



^- 193 



(^ 86 



112 4 



41 



66 



21 



'55 



,-^ 





27 



46 



.--^^ 



34-___J^ 



1163 Males. Total 2265. 1102 Females. 



56 



44 



(^ 92 



$ 191 



317 



-45 



-81 



^ 22 



^ 26 



^—74 



^^^^^^•^ 1*6.— Second annual generation at Chicago in 1907, showing the pronotal 

 22 



321 



