November, 1908.] 



423 



Dyes and Tans. 



African wattle barks have been partly 

 carried out in the laboratories of the 

 Imperial Institute. In those marked * 

 the tannin was estimated by the bell" 

 filter method. 



India and Ceylon. 

 Several varieties of wattles have been 



acclimatised in different parts of India, 

 and in the Ceylon hills A. deourrens and 

 A.dealbata are now plentiful. Although 

 the barks of these trees are used locally 

 for tanning purpose?, no attempt ha 

 been made to grow 01 harvest the bark 

 for export. 



Botanical 

 Source. 



Local Name or 

 Description. 



Source. 



Tannin. 



Non- 

 Tannin. 



Ash. 



Mois- 

 ture. 



A. decurrensi 



Black wattle 



Warburg, Natal 



% 



35'2 



% 



7 3 



%' 

 }1 



% " 

 11-7 



+ 





Natal 



37 -8 



9 3 



1-5 



9-5 



t 



» » 



?) 



35-2 



10 '3 



28 



11-3 



t 







39-8 



9-9 



23 



9-6 



+ 





» , 



36-8 



10 - 3 



2 6 



10-4 



t 



(chopped) 



Fort Conyngham 



35-1* 



12-0 



1-8 



11-4 





Cape Colony. 











A. pyenantha 





Dept. of Agric, 



40-1* 



13-0 



15 



10-1 





Cape Colony. 







4 - 





A. saligna 



— 



Dept. of Agric, 



26 - 4* 



12-1 



111 





Cape Colony. 











A, horrida 



" Doornbusch " 



Alexandra, 

 Cape Colony. 



18 - 3* 



8 3 



4 5 



11 











1'8 





A. decurrens 



Black wattle 

 (unchopped) 



Eastern Con- 

 servancy 



441* 



7-1 



10 9 





Mimosa bark 



Big Umgagi 



18-0* 



7-5 



5-3 



12 a 



>> 



5^ years old 



Amani, G.E.A. 



50-95 



8-54 





2-95 







39-28 



6 - 29 





4-88 



» , 



3£ years old 





38-12 



8 35 





10-76 



>> 





Wihelmstal, 

 G.E.A. 



47-32 



7-52 





1102 



>) 



10 years old 



Kawai, G.E.A. 



44-77 



8-04 





8-75 



A. mollissi>na\ 



5 years old 

 >» 



Amani, G.E.A. 



44-91 



5 -So 





871 



„ 





38-61 



7-27 





10 37 



" + 



)» 





46-78 



9-43 





9-62 



t 



" + 



7 years old 



Kwai, G.E.A. 



38-14 



13 51 





8-22 



10 years old 





46-39 



11-76 





6 01 



A. dealbata 



Wilhelmstal, 

 G.E.A. 



17-42 



6-54 





1115 









18-51 



10-96 





12-86 









18-48 



10-55 





11-92 



t Probably all var. mollissima. %=A. decurrens, var. mollissima 



Marketing op Wattle Bark. 



There has, since its introduction, always 

 been a good demand for wattle bark in 

 the European tanneries, but for several 

 years previous to its commercial pro- 

 duction in Natal, English tanners had 

 begun to revert to older and better 

 known tanning materials, owing to the 

 irregularity of the Australian sup- 

 ply- 



The chief consumers of wattle bark 

 are Germany and the United Kingdom, 



but it is difficult to obtain trustworthy 

 statistics showing the relative amounts 

 imported by each country. 



The following table showing the ex- 

 ports of wattle from Australia up to 

 1904, is taken from the third edition of 

 Maiden's pamphlet on Wattles (Sydney, 

 1906), the market prices in 1906 being 

 £6 10s. to £8 per ton for good bark 

 from A. decurrens, and over £8 

 for South Australian bark from A. 

 pyenantha. 



