.-:,'.' i\ (;(iMKi;i:\i;r, imkiiwïihwi.i: mi-: i,r:\i:iii.ii i;. 



The «Icvi.-ilioii Irom llic oxpcclcd 'J."( (I Ocjui li.inlly l)C cxplîtiiicd liy assuminfif 

 llial llic tippcaPiiiico of tlic clinincloi- (l('|ii'iiils <iii iiioi'c llian imc faclor. Ar- 

 rangcd in ordcr ormaf^iiiludo. llic porci-nla^cs of waxy secds forni such a conli- 

 mioiis séries IVoin lô.i lo 7i7t.l and the (lifTeronccs arc so slight. tlial to oxplain 

 Hic irsiills in tiiis way woiild re(|uii-o llio prédication of sncli a lari^c numlxT of 

 lailois Ilial llip inlorprdalion loscs ail value cven as a \vorking liypollicsis. 

 Tlic characler is allcrnalive and llic rlassilicalion certain, lience llie only lluc- 

 lualions that hâve to lie considered are Ihe probable and expei'imenlal errors, 

 and the ingénions hypolliesis proposed by Easl', sugifesting- Ihe Mendelian 

 nature of flurlualiny variations, can not be a|iplied. 



The déviations appear lo be individual rallier than varietal. In ail instances 

 when more llian Ihree cars of the saine cross were sccnred, significant de\ia- 

 tions occur bolii above and below the expected 'iU (I (I. It \vould seeni, there- 

 fore, that while there is an évident approximation nf Ihe 'J.'i l) (l ralio, sinall inil 

 definite and significant individual déviations are llic rule. 



In addition to the crosses recorded in Table I. two first génération Chinese 

 hybrid plants were pollinated by pure Chinese. In both cases the numlier of 

 waxy seeds produced was below the expected 50 (I by a signilicanl niimber. 

 The crosses were as follows : 



A first génération hybrid plant of a cross betwccn NI. a dent variety from 

 Salvador, and Chinese was pollinated by a pure Chinese Plant, tlie resulting 

 cars. Pedigree No. I ii, had 600 seeds of which 2iô were waxy. The expected 

 was oOOdzS.5, the déviation was, therefore, ôT seeds or nearly seveii times the 

 probable error. 



The second instance was a cross belween Diâ, red Chinese, and M" I . a star- 

 chy variety from noithern Mexico. One earof Ihis cross was pollinated by Dl."), 

 the red Chinese strain useil as the female parent. The ear produced ti!2S seeds 

 (if wliii II 280 were waxy. The expcclcd was 51 Vrt S.o. a déviation of TA seeds, 

 abuiil •') I >2 limes the probable error. 



Il will be noted that the déviation from the expected is in the same direc- 

 lidii as Ihe larger séries where Ihe expected ratio was 25 0/0. The relations are 

 shown in Table II. 



TAlil.K II 



S(l. OK THE TIMES THE 

 SEEIIS IIEVIATION EXCEEDS 



EXPECTED. rilOBADi.E EilHOlU 



Corrrl/ilinn hclict'i'n Aleu rnnr ('nlnr ami l'IiardcliT of Endospi'riii. 



In 21 ol' llic hybrid cai's discusscd above. Ihe parents possessed alcurone 

 layers of dillerent culors. The behavior of aleurone color in corn hybrids is a 

 complicatcd subject and will be Ireated in anolher publication'-. \\ ilh respect 

 to the behavior of this characler in the Chinese hybrids. il may be said that the 

 classes are seldom so well marked as in Ihe characler of Ihe endosperm. Nei- 



1. East (E.-M. . .\ Mriidcliiiii Iiil.'iinvhilioii i.r V.iii^ilioii lli:il is A|i|i:iiviill\ CuÈiliMiious, Amn.Miil.. 

 44, G.i82, 1910. 



2. For a c'iiiii|iri.|iiMisi\c (lisciissioii i>r lliis subject sec East K.-M. . niul IUies ll.-K. Iiilieril.iiHC 

 in Maize. llull. 1(17. C.oiiiinli.ul Ai;,i,iilliir„/ K. rite ri meut Slalioii. l'.lll. 



