250 



From this statement it will be seen that while there is diversity 

 in the quantity of latex obtained at different seasons and in different 

 years there is also variation in the composition of latex itself. This 

 latter variation arises from different causes but no doubt the effects 

 of rainfall is an important factor, when — so far as is known — other 

 conditions are normal. What the variation amounts to is shewn in 

 Table III. It will be seen that during 21 tappings almost daily from 

 the same group of trees the volume of latex varied from II4 to 

 338 ozs. c/c while the weight of a sheet of rubber prepared daily from 

 30 ozs. of the latex varied from 6 to S% ozs (avoirdupois). 



EXPERIMENT 

 TABLE (II. 



Variation in the weight of dry rubber prepared from an uniform 

 quantity of latex. 30 ozs c/c. obtained daily and weighed dry sheet. 



Date 1909. 



Rain fall 

 Inches parts. 



Total latex 

 obtained Daily 



Dry weight of 

 Sheet of 30 ozs 

 latex after 

 coagulation daily 



.... 



Remarks. 









ozs c/c. 



(ozs. avoirdupois) 





Dec. 29th. 





60 



114 



6 





30th. 







187 



6 



From the latex 



31 







145 



7 



obtaided daily 













30 ozs c/c. was 



1910 











kept apart and 



Jan. 3 











weighed dry in 





38 



210 



7 



the form of Siie'et. 



„ 4 





85 



200 



6 





5 





43 



252 







6 





47 



270 







„ 7 







291 







„ 8 







304 







„ 10 







338 



m 





„ II 







272 







„ 12 







276 



6H 





>, 13 





36 



268 



iVi 





„ 14 







340 



7% 





„ 15 





30 



304 



m 





„ 16 







288 



8 





„ 17 







316 



6^ 





18 







326 



6H 





19 





89 



308 



7 





„ 20 







292 



en 





„ 21 







284 







