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Show LATHYRUS ODORATUS. Cil.A.P. v. 158 h ever quite as heavy as those The self-fertilised peas were, tohw e t~o lots of seeds, the plants from the crosse d Po ds · From . des of the next generation were rais~ .· -Many of tho self-fertilised h S , d Generatwn. th Plants of t e econ . t d on sand before any of e . f d to O'ermina e 1 . peas JUSt re erre b . t d As soon as I got equa ]!airs, crossed ones, and were reJeC e :t sides of two large pots, which they were planted on the oppo~Ihe seedlings thus raised were the were kept in the greenho.use.d L edy which was first crossed by grandchi·l d ren ?f the Pamn te t he taw o' lots were from 4 to 6 m· e h es the Purple variety. Wh.e between them. Nor was there in height there was no ~Iffercnce . d of their flowering. When ·ked difference In the perw any mar d follows ·- fully grown they were measure ' as . TABLE LV. Lathyrus odoratus (Second G enerati(m ). No. of Pot. , . . Phntsl, ePdlillJ!5 from Pl~nts Seedh_ng"J10.~ the J self-fertilised dunng crosscu Ulmg 1 ny pr viuus two previous Genera- Dla t' . . tiOttS. __ G_ C'nera ~on~~ - lnclH~S. IncbC's. 72~ 57~ 71 67 I. I 52~ 56~ - I 81~ 66~ 45~ 38~ 55 46 II. Total in inches. 377•50 I 331. 8t) The average height of the SI·X cro~se d p lants is here 62 · 91, and .c. 100 to 88. There that of the six self-fertilise~ 55. 31mc~~s' o~. at~e two lots; the was not much difference ln the ~crti~ty ~ nhouse thirty-five crossed plants having produ~cd ln t e gree pods, and the self-fertilised thirty-two .J?ods. owers on these two Seeds wer~ saved from the self-fer~Il.Ised ~ thor the seedlings lots of plants, for the sake of ascertaining ~ lC th or vio·our. · ·t d'ffe ·once In O'row b thus raised would mhel'l any l r lot: in the following It must therefore be understood that both ttl t I·n the one trial are plants of self-fe r tI.lI. sed pare ntarbr e ·' b. uh h 1da been crossed lot the p·l ants were the chi' ldr e.n of p 1a n.t s w. hiCe n bae fore that self-during two previous genera~wns, havmg be CHAP. v. LATHYRUS ODORATUS. 159 fertilised for many generations; and that in the other lot they were the children of plants which had not been crossed for very many previous generations. The seeds germinated on sand and were planted in pairs on the opposite sides of four pots. They were measured, when fu]]y grown, with the following result:- TABLE LVI. Lathyrus odoTatus. I . I No. of Pot. Self-fertilised Plat1ts ; Self-fert.ilisr~d. ~!.ants frum Crossed Plunts. / from Sc lf-fu tihseu Plants. In ches. I I. Inches. 72 65 72 61~ II. 58 j I 64 68 I 68§ 72 ~ I 56~ III. 81 I I 60g -- i I lV. 77~ I i 76~ -- i --- - - Total in inches. 501 I 452 I The average heigbt of the seven self-fertilised plants, the offspring of crossed plants, is 71 ·57, and that of the seven self-fertilised plants, the offspring of self-fertilised plants, is 64 ·57 ; or as 100 to 90. The self-fertilised plants from the self-ferti lised produced rather more pods-viz., thirty-six-than the self-fertilised plants from the crossed, for these produced only thirty-one pods. A few seeds of the same two lots were sown in the opposite corners of a large box in which a Brugmansia had long been growing, and in which the soil was so exhausted that seeds of Ipoma3a pwrpurea would hardly vegetate; yet the, two plants of the sweet-pea which were raised flourished well. For a loug time the self-fertilised plant from the self-fertilised beat the selffertilised plant from the crossed plant; the former flowered first, and was at one time 771 inches, whilst the latter was only 68! in ~eight; but ultimately the plant from the previous cross showed Its superiority and attained a height of 108~ inches, whilst the other was only 95 inches. I also sowed some of the same two |