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Transactions of the Royal Canadian Institute 



TABLE 3. 

 Growth rates on days on which no special experimental conditions 

 were imposed. (Fig. 6). 



A day of low fog with sun for one hour (from 9 till 10 hr.) 

 Part near its limit of growth. 



Ijy. 19 I 3!lo| -i| -2| 0I-6J 8| 5I 20 I13I20 



^On Aug. 17 a tin reflector remained behind the part for the day. Temp.: 86-90; 

 17 hr. 76. 



2 Aug. 18. Part approaching its limit of growth. Temp.: 14 hr. 97; 18 hr. 57. 



'Aug. 19. Growth nearly complete; cutinization advanced. Temp.: 13 hr. 86; 

 17 hr. 64. 



■* Sept. I, 2 and 3 include the growth rates for a single internode near its limit of 

 growth. 



* Sept. 4. A young internode 31 mm. long, subjected to high temperatures; 8.40 hr. 

 87; 9.20, 99; 12, 105; 14, 106; 14.40, 102; 16.15, 86; 16.40, 74; 17, 77; 20, 55. Growth 

 from 7.40 to 7.55 and from 8.30 to 8.55=0. 



* Aug. 3, 4 and 5. Part near its limit of growth. 



' Aug. 24. A very exceptional reading, which for statistical purposes has been taken 

 as50. Uviol glass from 1 1 .35 on. Temp. 104 at 12; 106 at 13; 68 at 15. High fog 14.30. 



