1902.] 



I. H. Bui-kill — Flower of Ranunculus arvensis. 



113 



Table XXIII. — Rate of reduction of organs in tlie Keio plants from period 

 to period ; periods as before. 



Kew, Old 



f Sepals 

 \ Petals 

 1 Stamens 

 C Carpels 



/Sepals 



v„~, XT ) Petals 



Kew, New ... < „, 



J Stamens ... 



v. Carpels ... 



Periods 1 to 2 



Periods 2 to 3. 



Periods 3 to 4. 



1 

 Practically nil. 



010 



010 



0-19 



71 



317 



1-64 



1-24 



081 



0-69 



113 



Practically nil. 



0-23 



013 



0'17 



0-86 



3-68 



1*81 



1-07 



0-71 



0-77 



1-38 



Table XXIV. — Bate of reduction of organs in the German races from 

 period to period ; periods as before. 



Bonn 



Heidelberg 



f Sepals 



< Petals 

 I Stamens 

 t Carpels 



(Sepals 

 Petals 

 Stamens 

 Carpels 



Periods 1 to 2. 



Periods 2 to 3. 



Practically nil. 



Very small in- 





crease 



0-79 



slight increase 



1-06 



089 



013 



0-83 



0-06 



increase of 0'04 



022 



021 



120 



increase of 0'08 



005 



0-15 



It is easily seen that at the beginning of the flowering period a 

 large reduction is made in the male organs ; but that the reduction in 

 other organs is chiefly at the end. The following table shows this 

 excess of masculinity, which occurs at the beginning of the flowering 

 period and is soon done away with after flowering has commenced. 



Table XXV. — The percentage ivhich the Stamens (fertile and infertile) make 

 out the total of organs in the flowers, at different periods ; periods 

 as before. 





First period. 



2ud period. 



3rd period. 



last period. 



Kew, Old 

 Kew, New 



68-52 

 61-16 



6068 

 6113 



56-R8 

 54-98 



5389 

 51-68 



54-29 

 53-77 



Bonn 

 Heidelberg 



58 

 60 



11 



93 



53-76 

 58'55 



