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Show CALIFORNICA. OnAr. IV. ESCHSCHOLTZIA 112 A Gray aud pronounced eeds were e,x amined by .P rowf~istsho rw h.IsCa h they'were identdic abl in s . to E. cu.liforri'Lca, lants were coverc y a to belong Two of these P 1 1 lf ·tori le as in appearance. b so complete y se - ' genera d were found not to e . sub'ect in another part of net, ~n B t I shall recur to this t t ~that eight flower. on BraziL u 'll ffice to s a e l t . k Here it WI su . h llen from another pan this wotr .o plants, fertilised wit posules each containing on these w d ·ght fine cap ' der the net, prod~ce ei Ei ht flowers on these same un average about eighty_ seeds. on!'n, produced seven capsules, an ts fertilised with therr o":n pnl twelve seeds, with a I11J1Xl~: h' contained 0~ an averar: 0 lherefore the cross-fertilised mum in one of sixt~en se: s~lf-fertilised, yield?~ seed .. Jn the capsules, compared With th These plants of Brazilian parcnta?e t . f about 100 to 15. f m the English plants m ra 10 o ked manner ro d les differed also in a mar t neously self-fertilise capsu d . g extremely few spon a pro ucin ft under a net. , . . ds from the above I lant.' a _or Crossed and self-fertilised see l ted in pair on the opposite germinating on bare sand, w~e ~e:~lings thus raised were the sides of five large pots. T ~ich rew in Brazil; the paren~s grandchildren of the pl_ant~:·land.g As the grandparents . m having been grown ~~ c;oss-fertilisation in or ler to ywl~ Brazil absolutely requue . if-fertilisation would have prove any seeds, I expected that s~l'n ·s and that the cro. ~cd ones very injurious to these see ui e~i~r in height and vigour to would have been greatl!. s p wors But there u]t showe~ those raised from self-fertilised flo . for as in the ln.st expen- that my antl.C .i pa t'lO n was erron. eho ust ' ck so .i n the prcscn t on .e , ment with plants of the Enghsd ~ ~h~ cro sod by a little m the self-fertilised plant~ cxcee : t that the fourteen crossed height. It will be ~uffi.Cien~ t~h: ~o:rteon . olf-fortilisod 45 ·12 plants averaged 44 64, an inches in height; or as 1~0 to 101. lc -I now trica a different The b'jj'ects of~ Gross w~t~t ajre~~es~:lf~forti1isod plants of t~e experiment. Elg~t flowers o~ ·en of tho plant. which grew m last experiment (I.e., grandchil~r h 1l frmn tho arne plant, Brazil) were again fertilised wit P? .on an average 27·4 and produced five capsules, co:ntainmg ond rrhc seedlings seeds, with a maX·I mum I· n on e of forty-twd os eslefe-f e?s'.t ilisecl generat . n 10 raised from these seeds formed the secon . of the Brazilian stock. d 1 ts of the last expen- Eight flowers on one of the crosse p an CHAP. IV. CROSS WITH A FRESH STOCK. ment were crossed with pollen from another grandchild, and produ.ccd :five capsules. These contained on an average 31· f) seeds, with a maximum in one of forty-nine seeds. The seedling~ misecl from these seeds may be called the Intercrossed. Lastly, eight other flowers on the crossed plants of tho la-Ht experiment were fertilised with poJlon from a plant of the English stock, growing in my garden, and which must have been exposed during many pre vious generations to very different conditions from those to which the Brazilian progenitors of tho mother-plant had been subjected. These eight flowers produced only four capsules, containing on an avm·age 63 · 2 seeds, with a maximum in one of ninety. The plants raised from the. ·e . ·eec1H may be called the Englisl! .. ctosse(Z. As far as the ahove avoragcH ca,n be trusted from so few capsules, tho English-oro sod capsulcH contained twice as many seeds as the intercro. ·sed, and rather more than twice as many as the ·e lf-fert ilised capsules. Tho plants which yielded these capsules were grown in pots in tho greenhouse, so that their absolute productiveness must not b(· compared with that of plants grvwing out of doOI'S. Tho abbve three lots of seeds, viz., the self fertilised, intercrossed, ancl English-crossed, were planted in an equal statu of germination (having been as us ual sown on bare sand) in nine large pots, each divided into three parts by superficial partitionH. Many of the self-fertili ed seeds germinated before those of tbo two crossed lots, and these were of course rejected. The seedlings thus raised are the great-grandchildren of the plantH which grew in Brazil. When they were from 2 to 4 inchcR in height, tho three lots were equal. They were measured when four-fifths grown, and again when fully grown, anri as th eir I'elative heights were almost exactly the san1e at these two ages, I will give only the la st meas urements. The av rage height of the nineteen English-ems. ed plants was 45 · 92 inc heR ; that of the eighteen intCI·crossed plants (for one died), 43 · 38; and that of tho nineteen self-fertilised plants, 50· 3 inches. So that we have tho following ratios in height:- Tpe English-crossed to the self-fertilised plants, as 100 to lOU The English-crossed to the intercrossed plants, as 100 to 94 The intercrossed to the self-fertilised plants, as 100 to 116 After tho seed-capsules had been gathered, all these plant.· were cut down close to the ground and w ighed. The nineteen English crossod plants weighed 18 · 25 ounces; the intercroRsecl I |