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Show IIETER YLED Dill RPHIC PLA T . CIIAP. I. 11 1 ill itiro t uni n f Priroula. With f r v ry 100 d yi ~ cl by th two 1 - uni n nly 6 w r y1 ld d by an qual f g d ul fr m the tw ill gitimat nnion.. ' ith P. Sin n is, s w shall h r .aft r th ~ 1 r 1 rtic n We n arly th sam -na1n ly, as 100 t 1 artn r ht h wn that, on th a1 ularb u1n lychnitis yi lding with its wn p ll n it i ld wh n f rtili d by th p ll n of . Ph nic 1l71l! • d. · by th p 11 n f V. n1'gru.m <1 • h that f V. blattaria, 62 s ds. aga1n Dianthu b 1~batus f rtili. l by th p ll n f D. sup 'tbus i 11 d 1 cl., nd by th p ll n of D. Japonicus '() cl. r t tiv ly to th 100 ds produced by it 0 " 11 I 11 u. W thus -and th_ fac~ ~s highl~ r - nH rkn. 1 -tht t with Primula th 1ll g1t1mat un1on ' r 1 tiv 1 t th 1 gitimat are mor st ril than tw en distin t speci s of oth r g n ra r latiY ly t th ir pur unions. l\Ir. Scott has giv n * t till 1n r h·iking illu tration of the same fact : h ero d Primula auricula with pollen of four th r I ·i :1 (P. Palinuri, viscosa, hirsuta, and verticillata), nd th hybrid uni ns yi ld d a larg r av rag num r f d than did P. auricula wh n f rtili d. ill rritimc t ly with its own-£ rm pollen. Th n fit whi h het rostyled dimorphic plant clc-riv fr n1 th xi t nc of the tw £ rms is suffi i ntl.T bvi u n m 1 y, the in t r rossing of distinct plant in rr thu n ur d. t thing can b bett r adc pt d ~ r thi nd than the r lativ positions of th antb r. n 1 ti ma in the two£ rm , as shown in Fig. 2; but t<1 • '.Tourn. Linn. c. Bot.,' vol. viii. 1 G4, p. : . t I hnv hown in my work n tla ' Effi cts of Cro s nnd elf-fertilisation' how greatly the offspring from intercros d plnnb profit in height, vigour, and fertility. u \T'. I. PRDI ~L. YERI. . 1 n will ti n·nH h and if ro. -t rtili.' ti Hl faiL, ·n h . If-f 'rtilis1 ti n "ill h ... n lY: ntng on: t th plant n it will thn. 1 . tv cl fr In '< tnpl "'t barr ,nn . . . nt tllP l ch·antn~ i: not . gr ' a. 1ni:-,ht t t, u:st h , thought. f< r th · ,' <<lling.' fr In ill<•gitinl• tc nni< n lc n t cy ·n ·n 11. 'Oll. i ~ t of hoth f< rn1 , bn t nll l ( l< ng tc th • pnr<,nt fonn· thl'.T ar n1or n< r in. nn 1 gr , w akl ~ iu ·on titntion a· will h :hown in : future <'lu ptt r. If hn\\ •n r n flow r ~ own 1 oil en . h nl<l fir ·t b pl<1 · "'cl r in: <'L c r fall on th ,· ti~mn i y no tn : n I fo1lo~\' that er >: ·-f rtili:ation "ill h thn: pr - Y .. nt ·<L t 1' " 11 1-n "n th~ if 1 >ll n frnn1 1 <listinc•t 'l ·i' h 11• · <1 n tht tihtna of 1 plnnt, ~ ncl :nn1 hour: • ft pnrar l ' it· O\\ n pollen l>o plnc·< d on it tho 1 tt lf will b · pr .. J t ·nt an<l will quit~.~ < hlit Prat 1 ny fl' ' fr 111 th ~ fort·ign JH 11 n · ancl th r l'< n hardly h l 1 u th< witl h ,t •ro:tyl ·<l dinwrphie 1lant. 1 11 ·u fr 111 the >t h ·r ~ nn "ill hlit ·rat , th , t, Il' ·t f 1 11 n frtnn th -'< 111 fn·m v n wh n thi: ha: }la d >11 th ' tignw. ~ ·on ·i<h·rablu tin1 htJor . 0 t t thi ' li ·f pla · ·u n v ral ·ti«rnl~t ~ <fa lm o· ·t ·l' l. e w:lip 11 nty f 1 oll ·n fr lH the ·anH, plant and 1 ft<·r tw ·nty-£ ur he ur all ~ l 111 } fr nn l. :hurt, t I ~ larl·-r ; l 1 olyanthu.· "hieh i. , variety of the · )\\' ·hp. I ront th flow r.' thu · tr jHtc.<l . · llin«r: ' ·r ·. r ti d. an<l a1l th ·: · without ·. ·et~ption I or ... r ll<h h fl m ·r:: th, th ·fl(;et of poJI ;n fro1n th~ Ill fortn. thou rh I>la ·~; l on th ·ticr1na · wm1ty-f mr hour }Jl'('\'lou:l r Wl . • !tilt. cl '·troy' l 1 that of pc II 'll tr 1n t plant ·l n(rtnrr t th >thor fonn. 1 inally. 1nay r uu rk that f tlw f mr kincl · of uni nt that f th :h rt- tyL, l ill !Jitin t tuly f ·rtili · cl ith it Jwu-£ l'llll ll·n I· ·m· t 1 th • lllf t t •ril of |