AN ANALYSIS OF THE EFFECT OF SELECTION. 
Fic. 9.—Means and standard deviations for speck (1331) minus line. 
TaBLe 16.—1331 (Speck), Minus Line. 
Genera- ’ 
Gor. n M o r Diff. M. 
sO ee 125 | 4.464+0.044 | 0.733+0.031 | ............26 [eee eee eee 
Wigs io icasea teens 298 | 4.6882 .031 -790 .022 +0.132+0.039 +0.896 
FS ar alacniateais 895 | 4.1874 .026 .767= .018 | 14+ .170+ .028 | 1— .435 
Was stow vee 377 | 4.141+ .017 495+ .012 | } 224+ .030 | !— .134 
Bg scectis dois 807 | 4.072= .016 -425+ .012 | 14+ .023= .037 | 1+ .303 
MGs ciicintana 169 | 3.982 .022 .414+ .015 — .184+ .050 + .304 
Wg secsertesute 3 159 | 3.9484 .019 .3414 .013 — .014= .053 + .399 
Ess seis 27 | 4.333 .071 547 £050} cciawswewswaces +1.333 
New set 
F,.. 21 | 4.000+0.076 | 0.535+0.048 0.000+0.147 +1.000 
Fy... 36 | 4.417 .072 688 .051 | ...........6.6 + .417 
F;.. 99 | 4.081+ .045 629% .O31 | .....e cece eee + .081 
Fy... 163 | 3.9514 .031 .584+ .028 | 24+ .1386 .051 | 2+ .295 
F;.. 16 | 3.188+ .167 948 118 | ...........00- + .188 
2,192 
REVERSED SELECTION. 
Wes saciee da 161 | 4.429+0.035 | 0.663+0.025 
Paice dante 91 | 4.451+ .052 .743 .037 
Hp sane teedinsete 21 | 4.143 .114 -773 .080 
273 
1Includes data from reversed selection. 
2Includes culture 2625, a mating of 6X6. This culture is not included in the other columns. 
19 
