394 THE EXAMINATION OP EUCALYPTUS KINOS, 



Friability normal, the colour of the powder being a very light buff. 

 It contains a large amount of catechin. This sample may be 

 taken as one of the most strongly defined of the kinos of this 

 group yet examined by me, and may be considered as an extreme 

 type ; the amount of catechin remaining as a very light yellowish 

 powder after the tannic acid has been dissolved out with cold 

 water is very large ; on standing the water does not become clear. 

 Analysis (made August, 1891) shows its composition to be : — 

 Catechin and tannic acid ... 84*43 



Ligneous matter, &c. ... ... 4*0 



Moisture 9-94 



Ash 1-63 



10000 

 Tannic acid determination (Lowenthal), 15-2 per cent. 

 No. 38. I have received a specimen of kino, also from the 

 Wagga Wagga district, labelled " White Box, E. populifolia." 

 From its composition and general appearance, and also partly 

 because E. hemiphloia is the common " White or Grey Box " 

 about Wagga, I am inclined, as I am unable to get herbarium 

 specimens to settle the matter, to place this kino with E. hemi- 

 phloia. In fact, I look upon this as an instance of the usefulness 

 of kinos as a check upon species-naming. 



This kino is dull in appearance. Friability normal ; colour of 

 powder light buff or raw sienna. It does not dissolve entirely in 

 water, the catechin remaining as a light yellow powder; the 

 colour of the water is that of a weak infusion of tea ; it remains 

 slightly turbid. 



Analysis (made August, 1891) shows it to be composed of : — 

 Catechin and tannic acid ... 90-05 



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



Moisture 8-71 



Ash -84 



100-00 

 Tannic acid determination (Lowenthal), 14*5 per cent. 



