CAMPHOR, NATURAL AND SYNTHETIC 61 



Japan 



China 



Japan thus exported in 1907 1,805 tons of total value £512,730 

 (average value 25. 6d. per lb.); in 1906 1,570 tons, of value 

 £370,545 (average 2S. id. per lb.); in 1905 1,350 tons, of value 

 £261,756 (average 15. gd. per lb.). China exported in 1906 882 

 tons, of average value 25. ^d. per lb., and in 1905 only 320 tons, 

 of average value is. 8d. per lb. 



Extraction and Refining 

 The extraction of the camphor from the tree is a very simple 

 process. The wood, cut up into chips, is subjected to the action 

 of steam, whereby camphor, mixed with various essential oils, is 

 driven off and condensed in a cooled chamber. The crude 

 Japanese camphor, a coarse greyish powder, is exported in two 

 grades — Samuel A and Samuel B — and is then refined by means 

 of steam distillation or by sublimation or crystallisation. Refined 



1 Including re-exports. 



