420 THE EXAMINATION OF EUCALYPTUS KINOS, 



Water at 100° C (1 grm. to 1 litre) yields a browner solution than 

 No. 68 and very turbid. Alcohol (to form tincture B.P. strength) 

 yields an olive-brown solution, with a dark olive-brown muddy 

 residue, consisting largely of ligneous matter, and accompanied 

 by a sticky substance. In ether a small percentage dissolves, 

 and a lemon-yellow liquid is formed. The substance which gives 

 the kino its odour is entirely taken up by the ether. 



Following is an analysis, made October, 1888, of this kino: — 

 Catechin and tannic acid ... 84-25 



Ligneous matter, ike. ... ... 1*95 



Moisture 12*9 



Ash -9 



100-00 

 Tannic acid determination (Lowenthal) 46*222 per cent. 



No. 68. A specimen from New England, N.S.W., received 

 1886. A bright looking sample. It is third in depth of tint. 

 Is excessively brittle, and of a light olive-brown colour. Colour 

 of powder light dirty yellowish-brown, inclining to raw sienna. 



The description of the action of cold w T ater on No. 69 applies 

 to this one, with the exception that the difficultly soluble particles 

 of this kino display less tendency to aggregate. The liquid is 

 darker in colour, being about intermediate between Nos. 67 and 

 69. Continued treatment with water deprives it of its viscid 

 nature, and almost entirely dissolves it. Water at 100° C (1 

 grm. to 1 litre) yields an amber-coloured liquid, slightly brown and 

 slightly turbid. 



It was analysed October, 1888, with the following result : — 

 Catechin and tannic acid ... 86 75 



Ligneous matter, &c. ... ... *4 



Moisture 12*7 



Ash -15 



100-00 

 Tannic acid determination (Lowenthal) 51 -809 per cent. 



