86 PHOSPHORESCENCE IN 
flowers, not only of Papaver orientale, but also 
on those of the lly, Liliwm bulbiferum. And be- 
fore the phenomenon had ceased, upwards of a 
hundred and fifty persons had been astonished 
and delighted with this singular case of phospho- 
rescence. 
In the flowers observed by the daughter of 
Linneeus, the phosphoric hght produced was not 
continuous; it manifested itself in flickering or 
sparks, which were shot out from the corolla, and 
resembled somewhat those given by an electric 
machine. Other observers agree with these state- 
ments, and remark that the plants in question are 
most luminous on calm sultry summer evenings 
when the air is highly charged with electricity, 
and nave never been noticed to emit light when 
the atmosphere is very damp. 
In the phenomena remarked by Fries, the phos- 
phorescence of the flowers always occurred be- 
tween the hours of a quarter past ten and a quar- 
ter past eleven in the evening. ‘lhe weather was 
warm and sultry, and the lumimous phenomenon 
was best observed by looking at a group of 
poppies without fixing the eyes upon any one 
flower in particular. 
But the emission of hght by phanerogamic 
plants is not limited to the flowers. Some natu- 
ralists assure us that the leaves of Ginothera ma- 
crocarpa, an American plant, exhibit phosphoric 
