29 — 



experiments are described in detail by Eaton, who also gives several 

 illustrations of the distilling plant. 



Finally, the author gives a review of similar experiments in other 

 countries, the results of which are shown in the subjoined table: — 



Distilled 



by 



Yield 

 p. c. 



Material 



Properties 

 of the Distillate 



Ceylon 

 India . 



Italy 



German 

 E. Africa 



Jamaica .... 



West Indies 



Willis and Bamber 

 Hooper 



Lommel 



Duncan 



Watts and Tempany 



Giglioli 



America .... 



Hood and True 



f 0,06 to 0,1 

 I 0,22 



0,61 

 0,05 

 2,37 

 2,52 

 1,39 



0,5 

 0,5 

 0,7 



1,2 to 1,5 



2,4 to 3,0 



0,02 to 0,25 



2 



0,7 

 2,77 



Leaves and small stems 



Branches and thin twigs 

 Young shoots 



Wood 

 Twigs 



Green leaves 

 Dried leaves 

 Dead leaves 



Wood 



Leaves and twigs 1 ) 



Leaves and twigs 



Green leaves 

 Dry leaves 

 Twigs 



Shed leaves 

 Trees from shady places 

 Trees from sterile, 

 shady places 



[Contained from 10 

 [ to 75 p. c. camphor. 



► Camphor and oil. 



Crude camphor. 



[Camphor and oil. 



Camphor. 



Camphor and oil. 



We mentioned recently 2 ) an article by Lommel on the distillation of 

 camphor leaves at Amani. Since that time, as we observe from a com- 

 munication by A. W. K. de Jong 3 ), camphor leaves have also been destilled 

 in Java. From 3560 kilos green (?) leaves, de Jong obtained 31,15 kilos 

 camphor and 14,1 litres oil. 376 kilos branches (probably without leaves) 

 only yielded a trace of oil. De Jong destilled with steam of 3 to 5 atm. 

 The steam was passed through a galvanised iron case, enclosing three 

 cylindrical cooling vessels filled with water, the floor and walls of the case 

 being also washed by cooling-water. In the floor of the case was a cock 

 for drawing off the water of condensation. When the distillation was 

 concluded the cooling vessels were removed from the case and the camphor 

 which had distilled out was collected. 



Cananga Oil. According to reports to hand from Java, the native 

 producers have now considerably raised their limits and in the meantime 



x ) The small yield is explained by insufficient cooling. 



2 ) Report April 1912, 35. 



3 ) Teysmannia 1912, No. 2, p. 125. From a reprint kindly sent to us. 



