82 PHOSPHORESCENCE IN 
berose, different varieties of Nasturtium, the Yel- 
ow Lnly,-and some other plants. 
The Swedish naturalist, Professor Haggern, per- 
ceived one evening a faint flash of light repeatedly 
dart from a marigold (fig. 7). Surprised at such 
an uncommon appearance, he resolved to examine 
it with attention, and, to be assured that 1t was no 
deception, he placed a man near him with orders 
to make a signal at the moment when he ob- 
served the hight. They both saw it constantly at 
the same moment. The hght was most brillant 
upon marigolds of an orange or flame colour; but 
scarcely visible on pale ones. ‘he flash was fre- 
