Ill DEVELOPMENT AND ENVIRONMENT 73 



fan days July August September October Hooember Dec. 



■ ending 10 20 30 9 19 29 8 18 28 8 18 28 7 17 27 7 



.0-3 



Q. 

 =^0.2 



-2: 0.1 



Flowering 



0,0-2 



=5. 



OiO-1 



I 



Soil-surface 



R.L.-18-8m. 



Boiling 



Shedding: 



Percentage of 

 Shedding tq Flowers 



Fig. 47. — Terraceb Land. Giza. 1909. 



Three terraces, each 40 cm, lower than predecessor. 



Observations on 100 plants in each terrace ; flowers counted every day, bolls 



every tenth day, shedding by subtraction. 



