Influence of Certain Carbohydrates on Green Plants 55 



TABLE 22. Influence op Various Concentrations of Glucose and Saccharose 

 ON Growth of Sweet Clover 



(Duration, June 19 to August 1, 1914, forty -three days) 









Average 



Total 



Average 





Number 



Total 



number 



dry 



v^eight 



Culture solution 



of 



number 



of plants 



weight 



per plant 





cultures 



of plants 



per 



(milh- 



(milli- 









culture 



grams) 



grams) 



Check (no sugar) 



18 



83 



4.6 



708 



8.5 





0.1 per cent 



. 2 per cent 



8 



46 



5.7 



480 



10.4 





6 



29 



4.8 



318 



11.0 



Glucose 



0.4 per cent 



5 



26 



5.2 



296 



11.4 



. 8 per cent 



5 



28 



5.6 



328 



11.7 





1 . 6 per cent 



5 



42 



8.4 



549 



13.1 





3 . 2 per cent 



5 



15 



3.0 



346 



23.1 





^0.1 per cent 



9 



54 



6.0 



547 



10 1 



Saccharose < 



. 2 per cent 



8 



47 



5.9 



467 



9.9 



0.8 per cent 



6 



29 



4.8 



479 



16.5 





3.2 per cent 



5 



22 



4.4 



• 456 



20.7 



EXPERIMENT WITH CRIMSON CLOVER (TRIFOLIUM INCARNATUM L.) 



In the experiment with crimson clover large test tubes were used as 

 culture vessels, each containing 50 cubic centimeters of the culture solution 

 plus 1.2 per cent of agar. The seeds were immersed in the hypochlorite 

 solution for four hours. Maltose was the only sugar tested. The vigor 



TABLE 23. Influence of Various Concentrations of Maltose on Growth of 



Crimson Clover 



(Duration, January 3 to February 21, 1914, forty-nine days) 



Culture solution 



Number 



of 



plants 



Total 

 dry 

 weight 

 (milli- 

 grams) 



Average 

 weight 



per plant 

 milli- 

 grams) 



Check (no sugar) < g' ' 



f . 1 per cent 

 ,, ,, 10.2 per cent 



Maltose j q. 8 per cent 



[1.5 per cent 



68 



77 

 75 

 85 



11.3 

 13.6 

 13.6 

 15.4 

 18.7 

 17.0 



