SPECTRAL ENERGY CURVES OP LIGHT EMITTED BY VARIOUS SPECIES. 25 



ing the color values which correspond with these maxima. A mere glance 

 at the photographic curves of the light of the same insects, obtained with 





.52 * & 3 .60 2 4-JUL 



FiG. 11. Spectral energy curves of firefly and glow-worm. 



different apparatus, as shown in Figs. 7 and 8, should suffice to demonstrate 

 this point. The emission maxima of the various insects studied are shown 

 in Table 3. 



Table 3- 



