OCCURRENCE OF ALUMINIUM SUCCINATE IN TREES, 109 
Museum came into possession of fresh. material, and the 
investigation of this=timber and its deposit of aluminium 
succinate shows clearly that the failure to indicate the 
origin of the aluminium in the previous case, was due to 
the fact that Grevillea robusta is not the tree in which 
this aluminium succinate occurs. I have made investiga- 
tion of the ash of the following trees belonging to this genus: 
1. Grevillea robusta, Museum specimen from Lismore. 
2. G. robusta, cultivated tree growing at Marrickville. 
3. G. Hilliana, Museum specimen from Bangalow. 
4, G. Hilliana, cultivated tree growing at Ashfield. 
d. G. striata, Museum specimen from Girilambone. 
The ash of all these trees were found to be normal, con- 
sisting largely of the carbonates of lime and magnesia, 
together with the other usual ash constituents, but no 
alumina was present in either sample. It is thus evident 
that aluminium is not used by these species of Grevillea, 
and it is, therefore, hardly possible for an aluminium suc- 
cinate to occur in-either of them. 
It is generally accepted that the element aluminium is 
hardly ever utilised by flowering plants in their construction, 
as only in very few instances has it been detected in them. 
Some authors are most emphatic as regards the absence of 
aluminium in flowering plants. 
Church* shows the presence of aluminium in certain 
Cryptogams, and he obtained as much as 33°5% of alumina 
in the ash of Lycopodium alpinum, and 15°24*% in that of 
L. clavatum. 
Allen’ is most pronounced regarding the absence of 
aluminium in flowering plants, even going so far as to 
suggest the presence of clay as the origin of the small 
amount of alumina occasionally found in their ash. 
1 Chem. News, xxx., 137. 
? Commercial Organic Analysis, Vol. 1., p. 38. 
