H. E. ANNETT. 337 



Thickness of tree. Careful note has been kept throughout the 

 work of the relation of the yield to the thickness of the stem. It 

 has always been found that thick stemmed plants give the highest 

 yields. 



Amount of foliage. No definite relation has been established 

 between this factor and the yield and composition of juice. Indi- 

 cations have been observed which tend to shew that trees with plen- 

 tiful foliage give high yields. This fact is well recognised in the ease 

 of the sugar maple. Excessive stripping of the leaves for fuel and 

 fodder should be discouraged as it is in the leaves that the sugar has 

 its origin. 



Healthiness of tree. Trees have frequently been met with whose 

 trunks have almost entirely rotted away near the base leaving simply 

 a thin arch to support the trees. Strange to say these trees seem 

 to give a very satisfactory yield. 



Effect of soil. The natives say that in sandy soils the yield 

 and quality of juice are poorer than on heavier soils. This could 

 not be determined by the author as it would require a separate en- 

 quiry of its own. All that can be said is that certain indications have 

 been obtained which support the native saying. In this connection 

 the reader is referred to the statement on p. 325 relating to the 

 yields of juice at Khartalar. It will be seen that on this clay loam 

 heavy yields were obtained of a uniformly rich juice. 



Effect of flowering. It has been stated that during flowering 

 the quality of the juice falls off. N. N. Banerjee 1 states that the 

 male trees yield sap early in the season and that the female tree 

 yields its sap later on. These phenomena have not been noticed 

 by us, although careful attention was paid to these points. 



Individuality of the tree. It has bsen continually observed by 

 us that high yielding capacity of juice is a fairly constant character. 

 This can be well seen by reference to the tables on pp. 308 to 323, A 

 tree which is normally a low yielder such as No. 4 gives low yields 



1 Bengal Agri. Dept.'s Quarterly Journal, 1907, page 164. 



