640 SPINIFEX RESIN, 



Petroleum spirit extracts 3-2 per cent, of a transparent, colour- 

 less fixed oil or fat, which possesses a little of the disagreeable 

 odour of the original substance. The solvent extracts no resin. 

 As the substance has been made up into cakes by the blacks, and 

 is to that extent not an absolutely natural product, it may be that 

 the fat, or a portion of it, has been introduced. 



The substance was then digested in alcohol, which extracts a 

 transparent, hard, golden-yellow resin possessing some odour, and 

 which appears to be an interesting substance. The amount of 

 this resin is 67'3 per cent., and it darkens on keeping. 



Water digested on the residue dissolves out 6-9 per cent, of 

 colouring matter and salts. It contains no arabin. The remainder, 

 23 •! per cent., consists of dirt and particles of chopped grass. 

 This also is quite free from gummy matter. 



Summary : — 



Fat, soluble in petroleum spirit... 3*1 



Eesin, soluble in alcohol 67 "3 



Extractive and salts, soluble in water 6-9 



Accidental impurity 23*1 



100-4 



A second sample, treated with alcohol direct, yielded 70*8 per 

 cent, to that solvent. 



