IX 



CHAP. XI. 



Page 



The Glow-worm. Opinions on the Luminous Matter of 

 Insects. That of the Glow-worm, and Cause of its 

 Exhibition. Phenomena on its Introduction, and that of 

 the Insect, into various Media. Our Experiments and 

 Conclusions. Dr. Carus's Discovery. To what Purpose 

 subservient. Conclusion. - - - - - 132 



