330 Profs. Percy Frankland and Marshall Ward, 



Dark. 



* At 2.2 P.M. I turned the light from the cloudy sky on, taking care to shade 

 from any danger of direct sun, of which, indeed, there was none now. 



Total growth. =194 p in three hours forty minutes, which, at con- 

 stant rate =0'88 ft per minute. 



Growth to 12.54 P.M. = 71'77 /* in 128 minutes, which at constant 

 rate =0*56 ft, per minute. 



Growth afterwards =123 /*, in ninety-two minutes, which gives an 

 average of 1'3 p per minute. 



Light. 



* The sun was accidentally allowed to catch the bulb : on shading it, it fell to 

 17 C. in one minute. 



Total growth =187 p in three hours forty- five minutes, which at 



constant rate =0'83 p per minute. 

 Growth to 12.52 P.M. =80'5 /* in 127 minutes, giving an average of 



0'63 fi per minute. 

 Growth afterwards = 106-5 /* in ninety-eight minutes, giving an 



average of 1*08 /t per minute. 



