84 PHOSPHORESCENCE IN 
light proceeded from the petals. But as it is well 
known that when the pistil of a flower 1s impreg- 
nated, the pollen bursts away by the elasticity of 
the anthers, and may be to a certain extent elec- 
trified, M. Haggern thinks that this emission of 
light by flowers is electrical, and that it is caused 
by the pollen which, in flying off, is scattered 
upon the petals. Whatever we may be inclined 
to think of this theory, the observations of M. 
Haggern are exceedingly interesting. 
The latest, and at the same time most authentic 
