Newcombe, Sensitive Life of Asparagus plumosus. 23 



9th and lOth day same position — 11 th day lateral branches un- 

 folding, and on to 14 th day remained in same position with 

 branches unfolded when observations ended. 



8) Shoot 6.5 cm tall when covered, erect; older shoots outside 

 cover, 9 cm tall when transverse bend was made. After 2 days, 

 covered shoot bent 45° from vertical — after 3 days more declined 

 to 70 ° — 1 day more same — during f ollowing 14 days declined to 

 90° and unfolded lateral branches. Numerous observations showed 

 no considerable nutation of tip from time declination began. Total 

 length of shoot 20 cm. Period of Observation 26 days. 



9) Shoot 7.7 cm tall when convered, erect; older shoots 

 outside cover were 14 cm tall when transverse bend was made. 

 After 2 days covered shoot declined to 80° — so continued for 

 10 days when lateral branches of first order were unfolded. Total 

 hight of shoot 18 cm. Period of Observation 12 days. 



The examples described under 6, 7, 8 and 9 above are clear 

 cases of cessation of growth after the upper part of the shoots 

 had reached the transverse position. The following 4 plants had 

 perhaps not reached their definitive position, for they had not un- 

 folded their lateral branches when the experiments were ended. 

 These 4 shoots however declined steadily each in one plane, instead 

 of nutating irregularly as did numbers 1, 2, 3, 4 and 5, indicating 

 that light had some influence. 



10) Shoot 1.7 cm above ground when covered, vertical; older 

 shoots outside cover were 20 cm tall when transverse bend was 

 made. After 8 days covered shoot declined to 40 ° — so continued 

 for 12 days, when shoot 36 cm long — during next 8 days shoot 

 declined to 90° where it remained for 6 days when experiment 

 ended. Lateral branches were not unfolded. Period of Observation 

 34 days. 



11) Shoot 4.5 cm tall when convered — for 11 days mostly 

 vertical, then declined 30° — 12 th day same — 13 th day same — 

 14 th day declined to 45° when experiment ended. 



12) Shoot 3.5 cm tall when covered — for 9 days vertical, 

 then declined 30° — 11 th day declined to35° — 12 th day same 



— 13 th day declined to 45° — 14 th day same when experiment 

 ended. 



13) Shoot 1.5 cm tall when covered — vertical tili llth 

 day when tip declined 15° — 12 th day same — 13 th day vertical 



— 13 th day evening declined to 30° — 14 th day declined to 40°, 

 and experiment ended. 



The following 4 shoots were continued long enough under 

 experiment to determine whether the plagiogeotropic position which 

 they took was final. The effect of light is still evident: 



14) Shoot 28 mm above ground when covered, grew erect 

 for 10 days, when it reached hight of 24 cm. Older shoots outside 

 cover showed length of 21 cm, the diageotropic curve being 11 cm 

 above ground. On llth day, covered shoot declined 15° — so 

 continued for 3 days, then declined to 20° — next day declined 

 to 30° — 17 th day vertical tip, leaving section below bent 30° — 



