Senile Changes in Leaves of Certain Plants 309 



TABLE 16 {concluded) 



Number of leaf 



Length 

 (centimeters) 



Breadth 

 (centimeters) 



Area 



(square 



centimeters) 



Weight 

 (grams) 



Area of 



islets 



(square 



millimeters) 



Vine 22, 5.1 centimeters in diameter, 17 annual rings {concluded) 



7 



15 

 15 

 15 

 14 



14 

 15 

 15 

 14 



145 

 160 

 165 

 130 



1.6 

 1.8 

 1.9 

 1.5 



. 3367 



8 



3503 



9 



0.3307 



10 



0.3218 



Average area of islets for vine with 11 rings 0.3690 square 



Average area of islets for vine with 17 rings 0.3310 square 



millimeter 

 millimeter 



TABLE 17. Area of Vein Islets in Leaves of Vines 23 and 24 



Number of leaf 



Length 

 (centimeters) 



Breadth 



(centimeters) 



Area 



(square 



centimeters) 



Weight 



(grams) 



Area of 



islets 



(square 



millimeters) 



1. 

 2. 

 3. 

 4. 

 5. 

 6. 

 7. 

 8. 

 9. 

 10. 



Vine 23, 0.8 centimeter in diameter, 5 annual rings (only nine leaves picked) 



11 

 12 

 10 

 11 

 10 

 10 

 9 

 9 

 10 



11 

 10 

 12 

 11 

 12 

 11 

 9 

 7 

 11 



80 

 80 

 85 

 85 

 90 

 70 

 60 

 50 

 75 



0.9 

 0.9 

 0.9 

 0.9 

 1.0 

 0.8 

 0.7 

 0.6 

 0.8 



Vine 24, 2.5 centimeters in diameter, 



12 

 10 

 12 

 11 

 10 

 10 

 10 

 11 

 11 

 11 



11 

 11 

 13 

 12 

 ,11 

 11 

 11 

 13 

 12 

 12 



10 annual rings 

 100 



75 

 115 

 101 



70 



75 



80 



95 



95 

 100 



1.1 



0.9 



1.3 



1.1 



0.8 



0.9 



0.9 



1.0 



1.0 



1.1 



0.4893 

 0.4972 

 0.4885 

 0.5006 

 0.5097 

 0.4998 

 0.5013 

 0.5171 

 0.4909 



0.3709 

 0.3761 

 0.3781 

 0.3407 

 0.3173 

 0.3164 

 0.3187 

 0.3861 

 0.3275 

 0.3209 



Average area of islets for vine with 5 rings . . 

 Average area of islets for vine with 10 rings . 



. 4994 square millimeter 

 . 3453 square millimeter 



