284 NEW JERSEY AGRICULTURAL COLLEGE. 



MAIN BRANCH AND ROSETTE. 



The curve, rather balanced before October 26, becomes er- 

 ratic on that date, and is particularly marked by a sudden rise 

 to 16 inches, followed the next day by an abrupt fall to o, from 

 which it rises jerkily to a higher level. Unfortunately trouble 

 with the furnace after November 20 occasioned several cold 

 nights which made observations after that date unreliable. From 

 the general direction of the curve it seems as if the future level, 

 after an equilibrium would be reached, were to be higher than 

 the original. 



One of the branches springing from the ^I. B. at pot B, which 

 had dried down to two internodes, renewed growth from the 

 axil of the second leaf (which had fallen) and produced its first 

 leaf on November 4, the second on November 22. the third on 

 December 7. 



MAIN STEM AND ROSETTE. 



Growth had decreased so much that it was no longer measur- 

 able daily. On October 26 the curve for its rate jumped to i 

 inch, dropped to o on the next day, and maintained an average 

 elevation of about .5 inch for the rest of the period of observa- 

 tion. It shows a vacillation similar to the previous curve. 



One of the branches springing from the M. S. at pot 3, which 

 had died down to two internodes and dropped its leaves, re- 

 newed growth from the second leaf axil, opening its first leaf on 

 November 22J the second on December 7. 



SIDE BRANCHES I AND 2. 



In both of these branches the rate of growth was less than 0.5 

 inches a day and constant, showing gradual decrease. On Oc- 

 tober 26 the curve for S. B. 2 was not noticeably affected, while 

 that for S. B. i showed a sudden rise. Both dropped to o on 

 October 27 and rose in a jerky manner after that date, very 

 similar to the curve for M. B. R. All three of these curves 

 reached their successive maxima at exactly or nearly the same 

 date. The curve for S. B. i did not reach the former low level 

 again, while that for S. B. 2 did so only after a number of 

 branches from near its tip had started out to grow at a rapidly 

 increasing rate, reaching 15.5 inches by November 23. 



The effect upon the curve of rate of growth by a j^eversal of 

 the water current and a subsequent re-establishment of the old 

 current may then Ije demonstrated by a diagram like this : 



