350 Notes on Polyporus squamosus, Huds. 
It may be pointed out here that an appreciable falling off in growth 
was observed during the daytime. 
On May 23rd, i.e., about the time when growth ceased, spores 
began to collect upon a piece of black paper placed below the 
fructifications. No deposition of spores in quantity occurred 
before this date, On closer examination, the spore cloud already 
described by Bullet’ 1 as being discharged from Polyporus squamosus 
could be seen distinctly. This faint cloud may be compared with 
the smoke arising from a smouldering tobacco pipe. The discharge 
of spores in this manner continued without interruption for a period 
of ten days. Buller mentions one case in which the spore cloud 
was emitted for sixteen days. The floor in the vicinity of the block 
of wood became white with spores. An idea of the enormous 
quantity of spores produced can be gathered from the accompanying 
photograph (Text-fig. 44). 
Text-fig. 44. “ Spore-cloud ” of Polyporus squamosus. Below the sporophore 
was placed a piece of black paper, which, together with the surrounding objects, 
became covered with a thick layer of spores. The paper was so thickly coated 
that it was possible to write an inscription in the spore covering. 
Another interesting phenomenon exhibited by these fructifi¬ 
cations was the production of drops of liquid on the under surface. 
It was noted that these drops formed only towards the end of the 
period of growth in area of the pileus and after such growth had 
ceased. This exudation of water is presumably analagous to that 
] Buller, A. H. R, Loc. cit., p. 89, 
