140 
It will be noticed that in three cases, Nos. 2, 7, and 11, the results of 
analysis are slightly lower than that of the hark gathered from the butt of the 
same tree, but in the case of No. 9 the result is slightly higher; the appearance of 
the bark, when powdered, of No. 8 was too dark to be first-class, while that of No. 9 
was the best of the whole thirteen samples, and gives the best result. 
The powder from the bark of the limb is generally of a lighter colour than 
that taken from the butt, although the powders of Nos. 5,10, and 12 were very light 
for hark taken from the trunk of the tree. 
The bark of No. 3 was not first-class, being far too fibrous. 
In Part III of the Forest Flora of South Australia , by J. E. Brown, occur 
t'le following analyses of this bark by Mr. G. A. Goyder, Superintendent of the 
Crown Lands Laboratory at Adelaide. The localities are all South Australian:— 
Locality where grown, 
elevation, &c. 
Character of Soil 
upon which grown. 
Age of tree. 
Weight of bark 
from each tree. 
Thickness of 
bark. 
Portion of 
tree which taken. 
Percentage of 
Tannin. 
Total extractive 
matter. 
Years. 
lb. 
in. 
Government Farm— 
Belair, elevation 1,000 
Sandy loam, with 
6 
45 
0-22 
( trunk wood 1 
340 
55-3 
feet. 
Do do 
clay subsoil, 
do 
6 
' and bark of > 
( twigs. j 
5-1 
20-5 
Torrens Island— 
Almost sea-level 
Deep sandy soil 
5 
38 
0-23 
Trunk ... 
25-2 
46-5 
Do . 
do 
5 
0-04 
Twigs 
21-7 
40-8 
Bundaleer Forest—- 
Elevation 1,800 feet 
Ferruginous loam, 
7 
128 
0-20 
Trunk . 
31-4 
49-9 
Do do 
with clay subsoil, 
do 
7 
0-05 
Twigs 
22-3 
45-6 
•Semaphore— 
20 feet above sea-level ... 
Deep sand ... 
About 
30 
307 
0T8 
Trunk 
25-8 
42-6 
Brighton— 
20 feet to 30 feet above 
Clay soil ... 
6 
(sic) 
0-21 
Trunk 
28-7 
53-1 
sea-level. 
Do do 
do . 
6 
0-03 
T wigs 
25-3 
41-6 
Mount Gambier ... 
Calcareous sand ... 
7 
0 13 
Trunk 
31-7 
52-0 
I am of opinion that these analyses underrate the value of Acacia pycnantlia 
bark. 
The following six barks of this species were forwarded to the Technological 
Museum by Mr. A. L. Thrupp, Balhannah, South Australia. They form a very 
interesting series, consisting as they do of samples of the best bark obtainable, 
together with very inferior and ordinary specimens, grown under varied influences 
of soil and climate : — 
No. 1 is a splendid sample of the bark of this Wattle; it is thick, fairly 
smooth, and was taken from a tree of large diameter ; it was grown at Mount 
Torrens, South Australia ; analysed August, 1890, and found to contain 42T percent, 
tannic acid, and 67*75 per cent, extract. 
