24 Newcombe, Sensitive Life of AsparaguB pki/mosus. 



18 th day tip declined 15° — 19 th day vertical — 20 th day 

 declinod 25° — 2 Ist day vertical in morning, declined 30° at 

 evening — 22 d day declined to 40° — 23 d day declined to 70° 



— Position maintained to 37 th day, then rose to 45°, where it 

 continued tili 44 th day — 45 th day declined to 70° — 52 d day 

 vertical, and so continued for 4 days — 56 th day declined to 25° 



— 59 th day rose to 10°, and so continned for 3 days when ex- 

 periment ended. Total hight of shoot 117 cm. Period of Obser- 

 vation 62 days. No lateral branches. 



15) Shoot 22 mm above ground when covered. Older shoots 

 outside cover about 20 cm long, bent to horizontal at middle. For 

 88 days this shoot was observed at intervals of 1 to 3 days, and 

 seen to be behaving as number 14, now with tip vertical, now 

 declined. On 88 th day, tip was declined 15° froin vertical, total 

 hight was 82.5 cm — 111 th day, tip erect — 125 th day, tip 

 erect - 160 th day, tip erect, experiment ended. Between these 

 times when the tip was found erect, it was seen to be declined 

 15° to 45°, tho it probably erected and declined many times 

 between observations. Total hight of shoot 136.5 cm. 



16) Shoot 18 mm above ground when covered. Next older 

 shoot outside cone is 323 mm long, bent to horizontal about 17 cm 

 above ground. 22 days after covering, shoot is 430 mm tall and 

 is vertical — 37 th day vertical — 48 th day declined 15°, and 

 so continued tili 60 th day when apex died at hight of 95.5 cm. 

 Experiment discontinued. Lateral branch continued the growth. 



17) Shoot 3 mm above ground when covered. Next older 

 shoot outside cone is 25 cm long, horizontal bend 17 cm above 

 ground. 9th day covered shoot was 14 cm tall, declined 15° — 

 9th day, afternoon, tip vertical — next 5 days vertical' — 15 th day 

 declined 20° — 16 th day vertical and so remained 5 days — 

 21 st day declined 25°, later in same day vertical — vertical 22 d 

 and 23 d days, then bent 20° — 23 d day vertical — 24 th and 



25 th days vertical — 25 th day declined 30° — next 3 days 

 nutated up and down then vertical 2 days — 30 th day declined 

 15° — 31 st day declined to 30° — 32 d day declined to 45° — 

 33 d day declined to 60° — 35 th day rose to 30°, same day 

 declined to 45°, shoot 46 cm tall — 38 th day vertical — during 

 next 6 days tip nutated up and down from vertical to 30° decli- 

 nation, changing vertical plane of nutation daily or sometimes 2 

 or 3 times a day, observations made from twice to 7 times daily — 

 44 th day tip declined to 40° where it remained without nutation 

 for 2 days — 46 th day declined in same plane to 75° where it 

 remained 3 days — 49 th day rose to 45° — ölst day rose to 

 15° below vertical — 53 d day vertical and continued vertical for 

 10 days when experiment ended. Total hight of shoot was 83 cm. 



V. Effect of Etiolation on Unfolding and Position of Branches. 



On a former page of this paper it has been shown that a 

 shoot grown in the dark adds greatly to the normal number of 



