2-HEPTADECANOL 

 100 MG./L. 



2-HEPTADECANOL 



10 MG/L. 



2-HEPTAOECANOL 

 I MG./L. 



2-HEPTADECANOL 

 0.1 MG./L. 



_L 



80 160 240 



GROWTH, PER CENT OF CONTROL 



Fig. 4. Growth -promoting activity of 2-heptadecanol. 



320 



ISOLATE 

 100 MG/L. 



ISOLATE 

 10 MG/L. 



ISOLATE 

 I MG/L. 



ISOLATE 

 0.1 MG./L. 



ISOLATE 

 0.01 MG./L. 



lAA 



0.1 MG./L. (I0"^M) 



_L 



J_ 



_L 



_L 



-L. 







100 



200 300 400 



GROWTH, PER CENT OF CONTROL 



500 



600 



FiR. 5. Growtli promoting activity of the long-chain fatty acid from N. tabacum L., 

 'Maryland Mammoth." 



