2S2 



As so much variation in the yield of latex exists with groups of 

 trees it is necessary for the purpose of establishing an advantage 

 by any method or period of tapping that the advantage is permanent. 

 Table 5, furnishes the result of 6 groups of trees amounting to 86o 

 trees tapped daily and alternate daily occasions during 4 years, i,e, 

 1904, 1905, 1906, and T909. From this result Table 5 has been com- 

 piled and shews an advantage of nearly 4 % on alternate days over 

 daily tappings for four years. 



TABLE 5. 



Advantage of Tapping on alternate days over tapping daily. 





Tapped Daily. 







Tapped alternate Days. 



No. of 

 Experi- 

 ment. 



No. of 

 Trees 

 Tapped. 



No. of 

 Times 

 Tapped. 



Dry weight 

 of Rubber 

 ozs. 



No. of 



Trees 

 Tapped. 



No. of 

 Times 

 Tapped. 



Dry weight of 

 Rubber ozs. 



I 



50 



105 



217 



15 











II 



120 



43 



129 



12 



120 



67 



308 





III 



60 



20 



25 



2V4 



140 



63 



264 



iVz 



IV 



200 



103 



673 



934 



120 



18 



99 



IVa 



V 



200 



80 



453 



83/4 



200 



15 





Wt 



VI 



150 



78 



680 



7V2 



150 



51 



187 



9^2 





780 



429 



2180 



7V4 



730 



214 



1055 





Therefore :— lbs. 



730 trees tapped alternate days 214 times = 1055.8 Rubber 



730 „ „ „ „ 429 M = 2116 



Plus 50 „ „ „ 429 = 145 



780 „ „ „ „ 429 M = 2261 



780 „ „ daily 429 „ = 2l8o 



. .81 



or approximately an advantage of 4 % in favour of tapping on alternate 

 days over tapping daily. 



