IM KSONAL EQUATION IN BREEDING EXPERIMENTS. 363 



which \\< re homozygous recessives in respect to absence of yellow- 

 ness aiul starchiness, selfing brought out a latent red. 1 The 

 thn-r ears of this type which were obtained all came from kernel- 

 < la-sified in the planting as pure white (group (i)). Xo such 

 ears were obtained from selfed sweet kernel- in group (4). The 

 toi.il number of homozygous, non-yellow sweet ears obtained 

 was too small, however, to make it at all certain that .-imilar 

 n-d ars might not, with larger number-, be obtained from unmp 

 I ' ' rnels. 



It Is planned to get further data on thi- portion of the investi- 

 gation. using for planting the kernel- of ears s . 9, 10 and 11 

 \\liich formed the material for the personal equation part of the 

 \\ork. It can be said at this time that tin- experiment- \\ith 

 'id maize so far conducted furni-h no evidence thai 

 -omatic " intermediateness" comx.' metic intenncdiaieii' 



I !:< progen} "I a deep yellow kernel -dl'ed i- not \ i-ibly dilleivnt 

 In. m that of a lii;ht yellow kernel -elfed, pro\ idi-d both are ! 

 the -aim tic constitution. The tv-ult nl thi- experiment 



pn-ci-eK \\ith Darbishi re's 2 extensive stud) <.! --. ntially 



the same problem with peas. Indeed hi- final < < >m -hi-i. >n 

 ( it., p. 71) applies here without change of \\onlii ' That in the 

 attempt to predict the result i\eii mating the somatic char- 



a< it i not only of the parents and of the ancestors of the indi- 

 \ idual- mated, but of the individuals thi -in -i -1\ e-. max be nitin 1\ 



It-tt oni of account ; and that the expectation ba-i-d n a tin 

 of the contents of the germ cells of the two indi\ idual- i- fulfil led 



I MSCUSSIOX AM) Si \IM.\K\. 



l\e-nlt- MM h as are set forth in thi- paper \\mild crriainK ha\ e 

 been at oin- time proclaimed by some as furni-hiir^ a refutation 

 of Mi ndi-li-m. In fact one of the carlie-t i i itii i-m- .f M.-ndi-liaii 

 \\ork was mainly devoted to calling attention t" the existence of 

 Mich somatic intermediates between Mendelian categories in the 



1 A mill. H i' suit !i i I'Vrmly IM-I-IL i ..n, K. A. Ri-jit. An. 



we., \'I.. 233-237. i'J' i- 

 ' 1 ).n l.i-lim . \ D., "An I mental] -muition <>f tin- Fheory of Ai 



iiluitinii- in I h-n-.lity." ]'' *> !'.. \ 1. Si, pp ' i ;;. 1909. 



3 \\YMoii. \\ . I- . K.. " Mi'ii ' 1 - I \ltrriiutivi- Inli'-r itaiK-i- in I' 



trikii. \'\. I . |>|>. J-'N -'5|. I'l.iti-- I. .ui'l II.. - 



