174 J. H. MAIDEN. 



picking, as much of it is dark coloured and inferior. The dull 

 appearance is only superficial, for it has a very bright fracture. 

 It swells up in water to a large extent, and partly dissolves. The 

 soluble portion is clear, and almost colourless. This gum differs 

 in behaviour from such of the Acacia gums as are only partially 

 soluble in water, in that a few hours after placing it in cold water 

 it disintegrates, forming flaky masses, whereas the partially 

 soluble Acacia gums, while likewise swelling up considerably, 

 preserve a certain amount of cohesion for a day or two. It is 

 found in Northern Australia. 

 Albizzia pruinosa, Benth., "Stinkwood." 



See Maiden and Smith (63a) for an account of the partially 

 soluble gum of this species. 



Albizzia toona, Bail. 



Lauterer (33) gives an analysis of this gum. 



JBauhinia Carronii, F.v.M. 



From incisions made in the trunk it exudes a large quantity of 

 a yellowish, transparent, tasteless gum. of such wonderful tenacity 

 that, before breaking, it will stretch to a length of two or three 

 feet in threads so fine as to be almost invisible." (O'Shanesy, 

 Contrib. to Flora of Qd., p. 27.) 



JBauhinia Hooker i, F.v.M. 



Lauterer (33) gives an analysis of this gum. 



■Castanospermum australe, A. Cunn., "Moreton Bay Chestnut." 



Gum shown in N. S. Wales Court, Paris Exh. 1867. What I 

 have seen is a gum which swells up in water and but sparingly 

 soluble. I have only seen it in small quantities. Lauterer (33) 

 gives a note on it. 



Derris scandens, Benth. 



I have seen a small quantity of gum from this climber. 



Eryihrina indica, Lam., "Indian Coral Tree." 



This tree yields a brown gum of no value. The species is not 

 endemic in Australia. It is found in Queensland and Northern 

 Australia. 



