PLANTS THAT PRODUCE LIGHTS 131 
cent lightning bugs! Whether there is some rela- 
tion of source and supply here—either the plant 
giving of its phosphorescence to the insect, or vice 
versa—or whether there is merely an attraction of 
likes; or whether there is indeed any connection 
between the kindred powers of insect and plant, and 
this intimate association, is a question that yet re- 
mains to be answered. 
When the Creator made light, that was not 
enough; there must be eyes to appreciate this light; 
so He created animals with eyes, and human be- 
ings with eyes, and lastly, although the average 
person knows it not, plants with eyes, that they too 
might worship this great work of their Maker. 
The number of plant eyes is legion. They are 
usually tiny cells located in the epidermis of the 
leaves, and occasionally on the leaf-stalk. Numer- 
ous experiments have been made by Dr. Haber- 
landt which prove conclusively that the eyes of 
many species of plants are capable of detecting 
as slight shades of variation in light as are those of 
man. This is amply proved by the fact that cer- 
tain plants, like the vetch, pea, or lentil, may be so 
influenced in their earliest stages of growth that 
they deliberately turn toward lights. 
The scientific world now thoroughly recognises 
that plants have eyes, and actually see! Not only 
