308 
in eau de Javelle. The lack of a convenient arrangement for 
heating at the requisite range of fixed temperatures has post- 
poned the necessary experiments. 
The fact that certain specimens of charred wood are com- 
peor soluble in the nitric re-agent, and some even in eau de 
avelle, leads to the conclusion that in such cases either no free 
carbon is present, or, if there is any uncombined carbon, it 
must be in a different state from that in which this element 
sae compounds, one soluble in eau de Javelle, and one in- 
soluble in it, but dissolved by the nitric re-agent. The more 
resistant substance would be derived from the other by a further 
loss of hydrogen and oxygen, and incomplete conversion into 
the more resistant compound would be indicated by partial 
solubility in eau de Javelle. 
_ In the cases of partial solubility in eau de Javelle observed 
in the experiments mentioned above, the residue was black. 
Slighter charring with acid can, however, give a product in 
similar to typical charcoal. The product in both cases was 
bleached by eau de Javelle, and was not largely soluble in this 
re-agent. : 
_ Useful advice on several points was kindly given by Dr. P. 
Haas, and is gratefully acknowledged. 
XXXIII.—FUNGI EXOTICI: XXIII. 
EK. M. Wakertexp. 
prove to be of some importance. The parasitism of the two 
Polyporus Coffeae, Wakef. 
ungus mesopus. Pileus carnosus, irregularis, nunc lobatus 
nunc undulatus, vegeto cremeo-albidus, sicco alutaceus, adpresse 
subtomentosus, azonatus, ad 15 cm. diametro. Conteartus con- 
color vel isabellinus, centro ad 3 em. crassus, marginem versus 
