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Show HET ~RO TYLED DIUORPHIC PL -T . CHAP. I. m mann r, but no a nu1nl r we k pt. The se d , however, w r car fully ~ unt d, • n l th v rag are shown in the ri()'ht-hancl · luzun. Th r, ti for the number of s ds pr lu d l th tw I O'itimate c mpared with the tw ill giti-lllat uni n i h re 100 to 5: , which is pr bably more a un t th n the £ r g ing ne of 100 to 63. Iill n nd in th paper ab ve referred to gives th r nlt f hi e"'·p rim nt on the pres nt p i ; and th r h wn in a c ndensed £ rm in the foll win (1 tt bl (11). B id u ino- for the illegitimate uni ns 1 ll n fr rn a di tinct plant of the same £ rm, as wa I w y d n y me, he tried, in addition, th :ffects of th ph nt' wn llen. He counted the seeds. t i r m rk ble that h r all the fl wers which r f rtili d 1 O'itimat ly, as well as those fertili d ill >'itimat ly with I 11 n fr m a distinct plant b I n in t th me £ rm, yielded capsul s ; and fr m thi ~ fa t it might b in£ IT d that the two f rms w r r i r t lly much more f rtile in his cas than in n1in . ut hi ill gitimat ly f rtilised cap ules fr m th £ nn ntain d £ w r seeds relativ ly to the itimat Iy £ rtilis d capsules than in my exp ri. £ r th ratio in his case is as 42 to 100, in t l f, in mine, a 53 to 100. F rtility is a v ry uri bl el m nt with most plant$, b ing cl terInin .1 y th onilitions to which they are su j ct 1, f whi ·h fact I have observed striking instances with the HAP. I. 41 TADLE 11. Pl'imuln in n i (fron• Ilild bnuul) . .. ~a urc or Uni n. ----- -1-4 -1--~-+-·--~-1- --------------- 'hort· tyl d {i rm, by wn-form p 11 n }I from di tinct plnnt. Ill gitim t uni n hort- tylcd by p ll n from the amc} Hower. 111 gitimate union. • . m m nt i i.ffi ·r n • 1n crtili tion with fl w r' 27 1 21 --- 14 1 , _1_4 _ 1 16 ---1·--- 21 11 |