18 



Eleventh Annual Repoet 



The average growth of the species for the fifteen-day intervals 

 is as follows: 





May 



16th. 



May 

 31st. 



June 



15th. 



June 

 30th. 



July 

 15th. 



July 

 30th. 



August 

 14th. 



August 

 29th. 



Poplar 



2.18 

 2.58 

 1.29 

 5.61 

 6.75 

 2.98 

 3.32 

 11.51 

 14.76 

 8.46 



11.99 

 12.41 

 11.36 

 18.38 

 7.09 

 7.64 

 10.77 

 19.57 

 23.62 

 16.98 



17.13 

 19.44 

 15.85 

 20.43 

 7.75 

 10.50 

 12.88 

 19.83 

 24.11 

 20.85 



20.97 

 24.42 

 18.35 

 23.23 

 11.77 

 12.70 

 14.37 

 19.86 

 24.16 

 24.11 



24.88 

 29.98 

 20.73 

 27.66 

 15.07 

 15.10 

 15.09 

 20.07 

 24.40 

 34.39 



26.54 

 31.74 

 20.98 

 28.08 

 15.63 

 15.65 

 15.20 

 20.29 

 24.43 

 37.41 



27.21 

 31.86 

 21.02 

 28.08 

 15.65 

 15.75 

 15.66 

 20.46 

 24.59 

 37.99 



27.45 



Locust 





Walnut 



Catalpa 



21. 



Chestnut Oak 



Chestnut. . 



15.74 

 15.80 



Pecan 



15.67 



Ash 





Elm 



39.32 







The average growth of the species at the end of the monthly 

 intervals is as follows: 



May 



June 



July 



31st. 



30th. 



30th. 



11.99 



20.97 



26.54 



12.41 



24.42 



31.74 



11.36 



18.35 



20.98 



18.38 



23.23 



28.08 



7.09 



11.77 



15.63 



7.64 



12.70 



15.65 



10.77 



14.37 



15.20 



19.57 



19.86 



20.29 



23.62 



24.16 



24.43 



16.98 



24.11 



37.41 



August 

 29th. 



Poplar 



Locust 



Walnut 



Catalpa 



Chestnut Oak 



Chestnut 



Pecan 



Coffeenut 



Ash 



Elm 



27.45 



31.86 



21. 



28.08 



15.74 



15.80 



15.67 



20.46 



24.43 



39.32 



The growth of the species at the end of June, expressed in the 

 percentage of the year's growth, is as follows: 



Pel 

 Cent. 



Poplar 76 



liocust 77 



Walnut 87 



Catalpa S3 



Chestnut Oak 75 



Per 

 Cent. 



Chestnut 80 



Pecan 92 



Coffeenut , 97 



Ash 99 



Elm 61 



Another experiment, on wliich a preliminary report may be 

 made, is one ' ' to determine whether the lobing of the catalpa leaf 

 has a specific significance, and to what extent the lobing is influ- 

 enced by cultivation, pruning and the age of the tree." This ex- 

 periment was undertaken to refute or corroborate the idea held 

 by some persons that the true catalpa speciosa never has lobed 

 leaves. In this experiment the leaves on 130 trees were counted 



