1902.] 



I. H. BurkiJl — Flotver of Ranunculus arvensisJ 



113 



Table XXIIL — Bate of reduction of organs in the Kevi plants from period 

 to period ; periods as before. 



Kew, Old 



Kew, New 



/" Sepals 

 3 Petals 

 1 Stamens 

 C Carpels 



/' Sepals 

 3 Petals 

 1 Stamens 

 V. Carpels 



Periods 1 to 2 



Periods 2 to 3 



Practically nil. 



010 

 317 



0-81 



0-19 

 1-64 

 0-69 



Practically nil. 



013 

 3-68 

 0-71 



0*17 

 1'81 



0-77 



Periods 3 to 4. 



010 

 71 

 1-24 

 113 



0-23 

 0-86 

 1-07 

 1-38 



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

 period to period ; periods as before. 





Periods 1 to 2. 



Periods 2 to 3. 



Sepals 



Bonn ... ^ Petals 



Stamens 

 ^Carpels 



Practically nil. 



0-79 

 1-06 

 013 



Very small in- 

 crease 



slight increase 

 0-89 

 0-83 



/Sepals 

 V Carpels 



0-06 

 0-22 

 120 

 005 



increase of 0-04 

 0-21 



increase of 0*08 

 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 loliicli the Stamens {fertile and infertile) make 

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

 as before. 





First period. 



2nd period. 



3rd period. 



last period. 



Kew, Old 

 Kew, New 



68-52 

 61-16 



60-68 

 6113 



56-B8 

 54-98 



53-89 

 51-68 



54-29 

 53-77 



Bonn 

 Heidelberg 



58 

 60 



•11 

 93 



53-76 

 58-55 



