94 



THE COTTON PLANT IN EGYPT CHAP. 



The same figure (Fig. 48) also shows the fluctuation in 

 the growth curve, which can be obtained by following the 

 same plant from date to date. 



% 



27 ?S 



s?s 



May 23. 



July 4. 



July 18. 



Aug. 1. 



Aug. 



June 5. 



June 19. 



19 I !f 



,4 ?l jg 1 1J 



75. 



Sept. 72. 



Sept. 26. 



10 20 30 40 50 60 70 80 90 1OO 110 120 130 14O 150 160 170 180 190 



Centimetres 



FIG. 48. HEIGHT OF STEM. 



Wide-sown, pure strain "77." 



Tliis figure is a reproduction of a page in the. " Ledger " of this strain. 



The correlation of fluctuations in height with the fluctua- 

 tions of other characters has occasionally been interesting. 

 The most curious result was obtained in this same family 

 77, with respect to the leaf-length. The latter was 

 measured in the first week of September ; plotted against 



