Senile Changes in Leaves of Certain Plants 303 



TABLE 8 (concluded) 



Number of leaf 



Length Breadth 



(centimeters) (centimeters) 



Area 



(square 



centimeters) 



Weight 

 (grams) 



Area of 

 islets 

 (square ■ 

 milhmeters) 



Vine 6, 20.4 centimeters in diameter, 56 annual rings (concluded) 



9. 

 10. 



12 

 12 

 13 



11 



14 

 13 



85 

 112 

 110 



1.0 

 1.4 

 1.2 



0.1764 

 0.1690 

 0.1814 



Average area of islets for vine with 22 rings . 2901 square millimeter 



Average area of islets for \'ine with 56 rings . 1807 square millimeter 



TABLE 9. Area of Vein Islets in Leaves of Vines 7 and 8 



Number of leaf 



Length 

 (centimeters) 



Breadth 

 (centimeters) 



Area 



(square 



centimeters) 



Weight 

 (grams) 



Area of 



islets 



(square 



millimeters) 



Vine 7, 15.3 centimeters in diameter, 70 annual rings 



1. 

 2. 

 3. 

 4. 

 5. 

 6. 

 7. 

 8. 

 9. 

 10. 



10 

 12 

 10 

 9 

 10 

 10 

 11 

 10 

 12 

 13. 



12 

 14 

 11 

 10 

 12 

 11 

 11 

 11 

 14 

 14 



1. 



2. 

 3. 

 4. 

 5. 

 6. 

 7. 

 8. 

 9. 

 10. 



Vine 8, 3.2 centimeters in diameter, 

 10 10 



10 



11 



74 



11 



12 



89 



13 



12 



109 



9 



9 



57 



11 



11 



87 



11 



12 



90 



11 



11 



80 



8 



9 



46 



9 



9 



57 



84 



117 



74 



60 



80 



77 



85 



74 



115 



120 



15 annual rings 

 70 



0.9 

 0.9 

 0.4 

 0.3 

 0.4 

 0.5 

 0.5 

 0.4 

 0.9 

 0.8 



0.6 

 0.6 

 0.7 

 0.8 

 0.4 

 0.6 

 0.6 

 0.7 

 0.4 

 0.5 



0.1335 

 0.1634 

 0.1238 

 0.1574 

 0.1221 

 0.1310 

 0.1360 

 0.1280 

 0.1412 

 0.1392 



0.2866 

 0.2698 

 0.3644 

 0.3525 

 0.3166 

 0.3270 

 0.3460 

 0.3272 

 0.3360 

 0.3241 



Average area of islets for vine with 70 rings . 

 Average area of islets for vine with 15 rings . 



0.1376 square millimeter 

 0.3250 square milhmeter 



