344 NEW JERSEY AGRICULTURAL COLLEGE 



had been potted the day before (pot ji ^, and had, therefore, not 

 yet rooted. The pots were placed ±2 feet apart. Owing to the 

 length of the internodes, which ranged up to five inches, it was 

 not possible to make the distance l)etween rooted joints exactly the 

 same. Side Branch 1 was not rooted^ and Side Branch 2 was 

 trained to climl) np on a string. Fig. 1 shows the numbers of the 

 pots and the dates at which the vines were rooted in them. The 

 whole plant had a healthy appearance and was growing rapidly. 



On and after August 16th^ the box and pots 1, 2, A, B receiver 

 no water. All other pots were given abundant water once a day, 

 as before. On September 5th Side Branch 3 was severed from 

 the Main Branch between the box and pot jS, as shown in Fig. 1. 

 These two operations had the following effects : 



8ide. Branches 1 and 2 could now receive water only by mean^ 

 of a reversed circulation through either S. B. 3, M. B. or M. S. 

 As the two branches behaved very much alike, S. B. 2 growing 

 generally a. little faster, the record of S. B. 2 only will be con- 

 sidered. (See Fig. 2.) On August 12th and 13th, S. B. 2 grew 

 2.. 5 inches per day; the rate rose to three inches on the 14th and to 

 3.25 on the 15th. On August 16th, i. e., in the twenty-four hours 

 from August 15th, 8 a. m., to August 16tli, 8 a. m., the growth 

 registered was 2.5 inches. On August 16th it received no water, 

 and the rate of grow^th dropped to^ one inch onl August lYth, rose 

 to two' the next day and then dropped again, until it stopped en- 

 tirely on August 21st. At no time was the branch wilted, although 

 the thermometer registered 96° F. in the shade in the 

 greenhouse on August 16th. Growth began again on August 26th, 

 at the rate of 1, 2.5, 2, 3.25, 3.25 inches a day, to drop again to 

 2:25, 2, 2.25, 2 and 2.5 up to September 5th. On September 5th 

 the connection between the nearest watered pot, (h on S. B. 3, waa 

 cut. Tiie rate of growth dropped immediately to one inch for two 

 days. It recovered and dropped again on account of several suc- 

 cessive cloudy days, then rose again rapidly, only to drop sud- 

 denly on September 19th. On September 24th growth had been 

 reduced to less than 0.5 inches a day, and it remained at that fig- 

 ure. From September 24th to October 25th the total growth was 

 eleven inches. On September 19th the first pair of opposite leaves 

 appeared — usually a sign of coming fasciation. Side Branch 1 

 developed its first opposite leaves on October 6th. 



