DYES AND TANNING MATERIALS. 159 



almost alone ; but while the consumption of this 

 material has rather diminished, other substances have 

 been imported in continuously increased quantities. 

 One of the latest full accounts of these is that given 

 by Mr. Thomas Christy, 'New Commercial Plants 

 and Drugs/ No. 5 (1882), in which he classifies them 

 as barks, fruits, galls, leaves, roots, and extracts. 



MIMOSA-BARK, or WATTLE, derived from Acacia 

 mollissima, Willd., decurrens, VJ'&\&., pycnantha, Benth., 

 and dealbata, Link., has been an article of import from 

 Australia and Tasmania for many years. The last- 

 mentioned is very inferior ; A. decurrens, var. mollis 

 ( = A. mollissima> Willd.), is the best. An extract, or 

 catechu, is prepared from the latter. A. retinodes, 

 Schlecht., is also valuable, as is also the BABUL BARK 

 (Acacia arabica, Willd.) of India, which is as yet hardly 

 known in England. 



MANGROVE BARK (Rhizophora Mangle, L.) gives a 

 bad colour and quality to the leather if used alone, 

 but might prove useful if mixed with other materials. 



RED QUEBRACHO (Loxopterygium Lorentzti, Griseb.) 

 is a hard wood from the River Plate, recently intro- 

 duced, difficult to use from its great density. Other 

 Quebrachos, viz., 'bianco ' (Aspidpsperma Quebracho), 

 'flojo' (lodina rkombifolia, Hook and Arn.), and ' tipa' 

 (Machcerium fertile, or Tipuana speciosa, Benth.), are 

 also used in South America, and 200 tons were im- 

 ported in 1880, at 4 IDS. per ton. 



BALSAMOCARPON, the fruit-pod of Ccesalpinia brevi- 



folia> the ALGARROBO of Chili, was introduced in 



1876 ; but probably two or more species of Prosopis 



are included under this name or ALGAROBILLA, P. 



