L32 TIIJ: BOTANICAL MAGAZINE. [Vol. xxi. No. 246. 



Larue pots J 



Small pots < 



December 21. January 17. March '29. 



24-.;? 2S.6 86.7 



23.3 2S.0 77.0 



14.3 16.3 57.0 



16.1 17.7 63.7 



The plants iu the large pots flowered earlier and ripened 

 earlier than those in the small pots. 



The plants were cut May 29 and weighed in the air-dry 

 state : 



Small pot. Large pot. 



Number of Stalks I 



15 20 



Straw, g J 



20.7 91.0 



14.5 70.8 



n . f 8.2 41.0 



Grains, £ ) 



to I 6.0 36.0 



Hence the plants in the large pots produced here 5.4 times 

 more seed than in the small pots. 



The examination of the barley roots also showed a very 

 great difference in regard to the amount of root growing along 

 the walls 



Conclusion. 



With barley the total yield in the large pots was 4.8 times 

 of that in the small pots, while with spinach the former was 

 2.5 times that of the latter, hence the extent in which the 

 roots can spread along the walls of the pots has a very great 

 influence in diminishing the harvest. 



