CONTENTS. 



Vll 



£xpeviments of Reanmur . , . • 

 Cry of the death's-head moth .... 



Experiments of Passerini and Dnponchel . 

 The death-watch . . . . • • 



Ridiculed by Dean Swift. .... 



Observations of Swammerdam and Derham 

 Opinions of Geoffroy, OUivier, and Tigny 

 Several species of death-watch ... 

 Imperceptible sounds ..... 



Range of human hearing .... 



Organ of hearing in insects ..... 



Position of the ears of certain animals 



Antennse of insects analogous to ears . 



Remarks of Kirby and Spenee 



Illustrations from the hare and the rook . 



Experiments by J. R. 



Insects with very long antennae . . 



Opinion of Huber respecting antennal language 



01)jections to this . . . _ . 



Experiments and analogies disproving it 



Antennal box of water-beetles ... 



Opinion of Comparetti ...... 



Comparison with the stethoscope . • . 



CHAPTER v.— Vision of Insects. 



Insects which are supposed to be blind 



Experiments by J, R. on Punera contracta 

 Spiders said to' be blind .... 

 Vision of bees . . . . 

 Seeing one object with multiplying eyes 

 Illustration from birds 

 Various positions of the eyes of spiders 

 The coronet eyes of bees . . • 

 Experiments by Reaumur . 

 Double eyes of the whirlwig . . 

 Experiments of Leeuwenhoeck . 

 Structure of the eyes of bees . . 

 Mr. Herschell's opinions on vision 

 Researches of Miiller of Bonn . . 



SECTION II.— FOOD OF INSECTS. 



Division of insects according to their feeding organs 



CHAPTER VI.— Eating Insects. 



The jaws of insects . . . . _ • 



Jaws of insects do not indicate their food 

 Illustration from the stag-beetle and the earw 

 Method of entrapping earwigs. 

 Cannibalism of earwigs . . . • 

 Similar propensities of crickets . . • 

 Experiment relative to this . . • 



Tree hoppers {Cicada) do not live on dew . 

 Locusts do not chew tlie cud , . 

 Voracity of the cockroach . . • • 

 Cannibalism of the mantis • * • 



•g 



. 142 



144 

 145 

 ib, 

 147 

 ib. 

 148 

 149 

 150 

 151 

 152 

 154 



