Vlll 



Page 



Luminosity of the Baltic. Increased Brilliancy a Pre- 

 sage of the Storm. Some British luminous Molluscse 

 discriminated. Peculiar luminous Effects described by 

 Navigators. - -'!.. J - - - - 59 



CHAP. VI. 



Phosphorescence of the Ocean continued. Various Sources 

 of Light connected with Marine Animals. Luminous 

 Sea Weed. Luminous Testacea. Specific Differences 

 in the Phosphorescence of the Ocean. Various Animals 

 contributing to this Luminosity. This Investment of 

 Light a beneficent Provision. - - 70 



CHAP. VII. 



Torpidity. General Remarks. Torpidity of Insects. The 

 Ant. Siren Lacertina. Marmot. Distinctive Features 

 of Torpidity, and Remarks in Illustration. Inductive 

 Conclusions. - - 79 



CHAP. VIII. 



The Testudo Grseca, or Common Tortoise. An Account of 

 that in the Palace Garden at Peterborough. Additional 

 Particulars. The Dormouse. - - 94 



CHAP. IX. 



Migration of Birds Swallow Submersion and Migration. 



The Cuckoo. The Stork. The Nightingale Starlings 



on their Return from Migration. Migration in the Insect 

 World. Butterflies. The Locust. Contemporaneous 

 Phenomena. Instinct. Conclusion. - - - 102 



CHAP. X. 



Light emitted from Vegetation. Exotic Luminous Insects, 

 Pausus Sphaeroceros, and others. Elater Noctilucus. 

 Fulgora Lanternaria and Candelaria. Indian Grosbeak. 

 Lampyris Noctiluca, or Glow-worm, Habits, &c. 

 Lampyris Italica. - - - - - - -119 



