PURE LINES 253 
Taste XL.—Ssowina VaRIATION WITHIN CLasses IN A PopuLation Composrep 
or Pure Lines. (From Johannsen) 
Classes of progeny seeds in cg. 
Classes of mother ae 
beans, cg. een l exe n M o 
5 (Be) 25 | 35 45 55 | 65 75 85 ie 
15-25 1 15) 90 63 11 | | | 180 43.78+0.56 7.47 
25-35 15} 95} 322 | 310) 91) 2 | | | $35: | 44.47+0.31 9.03 
35-45 5 17/175 776 956/282) 24 3} | 2,238 | 46.17+0.19| 8.98 
45-55 4, 57) 305 | 521 196/51 f 1,138 | 48.94+0.28] 9.3 
55-65 1) 23) 130 230/168 46 |11 609 | 51.87+0.42 | 10.42 
65-75 5} 53 | 175 180 64 15] 2 | 494 | 56.03+0.45 | 10.02 
Total 15-75 eg..| 5)38)370) 1,676 2,255 928 187 33) 2| | 5,404 | 47.9240.13| 9.87 
It is true that each of the six progeny series corresponds closely to 
the normal frequency distribution. There is no distortion such as would 
be expected from mixed material. Nevertheless it becomes evident that 
the material is heterogeneous as soon as the data are arranged by pure 
lines as shown in Table XLI. 
TaBte XLI.—Survney or THE Errect oF SELECTION IN Purp LINES 
(The dark-faced figures indicate mean weights in cg.; the light-face figures designate 
respective numbers of seeds.) (From Johannsen) 
| Weight in cg. of the mother beans Mean 
Thepure/ Sa hee weights 
lines | of the 
20 | 30 40 | 50 | 60 | 70 lines 
| 
I RCN Ween tee egy (ae aaule eis het 145 
II ..| 67.2 | 86 | 54.9 | 195 | 56.6 120 | 55.6 | 74 | 55.8 | 475 
III All 2 |... | 66.4 | 144 | 56.6 | 40 | 54.4 | 98 | 55.4 | 282 
IV A ass ... | 64.2] 32 | 63.6 163 | 56.6 | 112 | 64.8 | 307 
Vv | 52.8 107 | 49.2 20u|meee We | 50.2 119 | 61.2 | 255 
VI| .... |....] 53.5 | 20 | 50.8 | 111 | 42.5|10].... |] ....| 60.6 | 141 
VII | 45.9 16 | ee J 49.8 | 262 | Best | eet re or | | 49.2 | 305 
VIII .. | 49.0 | 20 | 49.1 | 119 | 47.5 | 20] . 48.9 | 159 
IX 48.5 117 | Boke | sae | 47.9 | 124 | | 48.2 | 241 
x 42.1 | 28 | 46.7) 412 | 46.9 | 93 46.5 | 533 
DOE ewene du se aba 11s | 4624 217 | 46.2 ae Reveal urces [eee pele 
XII | 49.6 | 14] .... |... eee es | abe leee Dn tAanOUeO vel eles 145 -ba|) 28s 
XIII 47.5 | 93 | 45.0 | 219 | 45.1 | 205 | 45.8|95|.... |]... | 45.4 | 712 
XIV | .... |....] 45.4 | 21] 46.9] 51 Seller eel 4278 ie Sule en eet (ea be Sh (0G 
XV | 46.9] 18]. |. Pee ees 44065 | Slo s4 6 ON eso Meters al tie ll) 405.0)/ R188 
EXEV ATE nena oP) ase far | aaa 90 | 41.0] 36 44.6 | 273 
XVII | 44.0] 78] .... | 42.4 | 217 42.8 | 295 
XVIII | 41.0 | 54 | 40.7 (203 | 40.8 | 100 | 40.8 | 357 
XIX . |e.-+| 35.8 | 72 | 34.8 | 147 | 35.1 | 219 
| | = == | 
I-XIX | 44.0 80 | 44.3 1835 | 46.1 l2288 | 49.0 j1138 51.9 je09 56.1 | 494 | 47.9 ee 
| | 
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