140 
The sections of both varieties had been placed in a dry 
atmosphere for one month. The results were : 
Eucalyptus rostrata. Eucalyptus globulus. 
“ Red gum.” “ Blue gum.” 
Spec, gravity 0‘8112 Spec, gravity 0’772 
These sections were now planed (bark included) to thin 
shavings, which were now weighed, burnt in a platinum 
dish to white ash, and this was weighed. The results were : 
E. rostrata. E. globulus. 
Ash 2-25% Ash 2-01% 
Analyses were now made of the ash obtained by burning 
the shavings of the larger samples. This ash was white, 
inclining to straw-colour. 
Eucalyptus rostrata. Eucalyptus globulus. 
“ Red gum.” “ Blue gum.” 
KaO 
NaaO 
9-50 
3-40 
K^O 1 
NaaO j 
25-00 
MgO 
6*30 
MgO 
6-47 
CaO 
43-80 
CaO 
35-08 
Ferric and aluminic 
Ferric and aluminic 
phosphates 
0-78 
phosphates 
1-07 
MnO 
trace 
MnO 
trace 
SiOa 
0-29 
AI 2 O 3 
trace 
SOo 
1-57 
SiOa 
0-34 
Cl 
0-60 
SO 3 
1-55 
Sand and carbon... 
1-77 
Cl 
0-85 
Sand and carbon ... 
1-04 
The leaves of the eucalyptus contain very considerable 
quantities of tannin ; in fact, I think it is certain at some 
time or other they may prove a valuable source of tannin if 
the tree be largely cultivated. I have been told that in 
some parts where the tree abounds, a kind of decoction is 
made of the leaves, and drunk as tea is. 
