376 



T. FURUTA. 



On May I2th., flowers were open on all the plants. 



It will be seen that the flowers in Pot Xo. II. opened sooner 

 than those in the other three pots. 



On May 15th. a photograph was taken (see Plate XL VI.) 

 which shows that pot No. I. had the most leaves, and that 

 Xo. II. showed the greatest height of plants, while Xo. IV. 

 was backward in development. 



On May 30th., the seeds approached their ripening stage. 

 On June 12th.. white spots of a fungus appeared on several 

 leaves, especially on leaves of Xo. II. A. On June 19th. the 

 plants in the series A of these pots were cut and weighed with 

 the following results : 



Buckwheat. 





No. II. 



No. IIL 



No. IV. 



/ S plants \ 

 \_ in each yot. ) 



CaO : MgO 

 3 : » 



CaO : MgO 

 2 : 1 



CaO : MgO 

 1 1 



CaO : MgO 

 1 : 2 



Total weight. 



382 S 1 "- 



220 gr. 



190 gr. 



106 gr. 



Average weight of 

 one plant. 



35-3 S 1 "- 



27-5 g f - 



23-8 g 1 "- 



'3-3 g 1 "- 



Average height 



"2 cm. 



68.3 cm. 



574 g 1 "- 



4S.6 cm. 



Number of leaves. 



199. 



155- 



18L 1 



11S. 



Number of / ripened, 

 the bundles] 

 of seeds. I unripened. 



112. 

 18. 



96. 

 10. 



75- 

 64. 



6, 

 19. 



Weight of f ripened, 

 seeds. ( unripened. 



55- g r - 

 5-5 gr- 



45- gr- 

 5-5 g r - 



34- gr. 

 14-5 g r - 



20. gr. 

 5-5 g 1- - 



Weight of 100 

 ripened seeds. 



453 g r - 



4-35 gr- 



3-9 2 g 1 "- 



3.S6 gr. 



Conclusion : — On glancing over this table it will at once be 

 seen, that the yield from the pot Xo. I., was in every respect the 

 richest. Tolerably close follows the yield of pot Xo. II., but 

 with pot Xo. III., a very considerable falling oft" will be noticed 



1 Pot No. III., was rich in leaves, but many of these leaves were very small. 



