461 



Tapping Seasons. 



The result for a period of one year with the garden trees are 

 as follows: — 



. of 

 iment. 



Groups 



Average 

 girth 



Period of Tapping. 



Ratio of 

 Fluid ozs. 

 to 1 oz. 



No. of 

 times 



1 



Is. 



W 



of 

 Trees. 



per 



Tree. 



■ 



1905. 



1906. 

 



DryRubber 

 advoirdu- 



pois. 



tapped 

 within 

 one year. 



Remarks. 



I 



>> 



50 



Ft. In. 



3 7 



Aug.-Sept. 

 Nov.-Dec. 





\ tl± c /c. 

 O 1 6 >> 



1st Period. 

 2nd 



Mornings. 

 Evenings. 



>) 



ii 







June-July. 





3 r d „ 



Mornings. 



II 



>> 



120 



M 



3 o«- 



Sept.-Oct. 

 Dec. 





*)4# 



5 7^ » 



1st Period. 

 2nd „ 



Mornings. 

 50 trees 

 Evenings. 



III 



I4.0 



2 Hi 



Sept.-Oct. 







1st Period. 



Mornings. 



it 







Dec. 



Jan. 





2nd 



Evenings. 



IV 



200 



3 2f 



Oct -Nov. 



Mar.-Apl. 



L» 



.Ml 6 >\ 



1st Period. 

 2nd 



Mornings. 

 Mornings. 



V 



200 



3 1^ 



Oct. -Nov. 



May. 



J 4t^ »> 



1st Period. 

 2nd „ 



Evenings. 

 Mornings. 



VI 



> ) 





4 51 



Nov., Dec, 

 Jan. ' 



June-July. 



z' e 3 



V OTa )> 

 C3A » 



1st Period. 

 2nd „ 



Mornings. 

 Mornings. 



This return clearly shews that morning are better than evening 

 tappings, that trees can be tapped twice within the period of a year 

 but the interval of rest: should not be less than five months, that 

 the dormant months December, January and February yield a 

 smaller percentage of caoutchouc, and that the best season for 

 tapping is from April to November. Turning to methods of tap- 

 ping we have not found any advantage in respect of yield by the 

 spiral over the herring-bone and considering the small advantage 

 of the double over the single incisions we think the single cut with 

 small trees would best economise the bark. 



Wound Recovery. 



In the case of a tree which had never been tapped, or in which an 

 interval of several years had elapsed between the different tappings, 

 the yield of rubber would, we have reason to believe, be the maxi- 

 mum in whatever month or season the tree was tapped but sub- 

 sequent tappings would be modified by the interval of rest and by the 

 physiological phase of the tree at the time of tapping. 



