554 



The first period of tappings gave the following 

 results : — 



Date. 



Fluid ozs. of latex 

 obtained. 



Remarks 

 excised. 



Dry rubber 

 ozs. (avoirdupois). 



9fi 7 HQ 



£o — i — uy 



11 ozs. c/c 



Herring- bone 



5^- ozs. 



97 7 HQ 



* — 1 — uy 



1 ft 



IB ,, ,, 



>» 



lu „ 



9ft 7 no 



— i — uy 



J- 4 ii ii 



ii 



93 



9Q 7 HO 



^y — < — uy 



1 ft 



»» 



8 ,, 



30—7—09 



12 „ „ 



H. B. New 



3i „ 



31—7—09 



12 „ „ 



» 



4i „ 



20—8—09 



36 „ 



H. B. New 



16| „ 



24—8—09 



24 „ „ 



»> 



74 



Total ... 145 ozs. c/c lbs. 3-11 ozs 



It will be seen from this statement that daily 

 tappings are not favourable ; there is a fall off in the 

 quantity of latex obtained and a large fall in the ratio 

 of dry rubber to that of latex. When first tapped, or, 

 after a period of rest of six days or more, between 

 tappings, two fluid ozs. of latex yield one ounce (by 

 weight) of rubber substance. It may be also remarked 

 that — although not shewn in this statement — vertical 

 instead of oblique excisions give the best results. 



In preparing the rubber all the latex was strained, 

 in the same way as Para, and to this latex boiling water 

 was added in proportion of two parts to one. After 

 well stirring about { oz. c/c of Purub, diluted in 4 ozs. of 

 water, was dropped in the fluid and again stirred, when 

 clotting or separation immediately commences and an 

 agglutinated mass is formed which, after drying for 

 about one day, is coagulated into a clear white, hard, 

 odourless ball. 



