340 oN THE OCCURRENCE OF ALUMINIUM IN CERTAIN CRYPTOGAMS. 
Extracts and Whestrarts. 
NOTES ON THE OCCURRENCE OF ALUMINIUM IN 
CERTAIN CRYPTOGAMS. 
By A. H. Cuvrcn, M.A. 
Att the more recent and exact analyses of the ashes of plants 
show that the element aluminium is not to be found amongst the con- 
stituents of flowering plants, and that its presence is confined to a few 
of the Cryptogams. During the last two years I have been endeayour- 
condition was fulfilled by a system of washing and brushing — 
various plants operated upon, and analysing the material experimente 
cati i 
merely required the use of pure reagents, such as sodium hydrate 
made from ance and of silver vessels instead of those of glass 
oyed. 
re giving my chief results a word must be said as to the 
work already done in this direction. So far as I know, aluminium 
esse: 
to the plant itself. For instance, in 1856, Bat mak (Apa 
Chem. Pharm., c., 297) found in the ash of the Lycopodium dentiou- 
latum of gardens (really a Selaginella, the S. Kraussiana of Kunze) 
42 per cent. of silica and 2-0 per cent. of alumina, a small proportio2, 
