VI 



CONTENTS. 



Effect of drink on the saliva , « • < 

 Drinking of unts . . . • . 



Drinking of butterflies . • . • • 

 The tongue in insects . . • • 



The tndent-fonned tongue of Leistus , , 



CHAPTER IIL— Smell in Insects. 



Experiments on the smell of insects . . . 



M. le Cat's opinion about odours ... 

 Illustration from the burying beetle 

 Experiments of Hunter and Huber ... 

 Whether bees perforate flowers . . . 

 Suckers of some insects adapted to flowers . 



Illustrations from fishes and birds 

 Illustrations from the camel and the elephant . 

 Offensive odours of insects .... 



Discharges of the bombardier l^etle 

 Questioned by Millard : proved by Stephens 

 Odour of ants ...... 



Observation of Dr. Franklin .... 



His inference disproved by experiment . 



Illustrations from Negroes and hounds . • 

 Experiment on the bed-bug .... 



Organ of smell ........ 



Opinion of Baster, Cuvier, and Lehmann , 

 Opinions of De Blainville and Latreille . * 

 Experiments of Huber .... 



Opinions of Camparetti, Christ, and Lehmann . 

 Interesting experiments of Huber . . .' 

 Experiments of Dr. Rousseau , « • • 

 Other experiments of Huber . • • 



CHAPTER IV.— Hearing of Insects 



Hearing of insects denied by Linnseus and Bonnet • 

 Bonnet's inferences objected to 

 Experiment by J. R. . . . . 

 Experiments of Brunelli ... 

 Drum of the field-cricket ... • 



Sounding instrument of grasshoppers . 

 Chirp of crickets . . , • 

 Disliked by Swammerdam . . 



Instrument of the hearth-cricket 

 Instrument of the tree-hopper {Cicada) 

 Its music anciently celebrated . . 



Crickets banished by drums and trumpets 

 The sounds of insects do not proceed from the mouth 

 The hum of bees .... 

 Opinions of Chabrier and Reaumur . 

 Experiments of Reaumur and Hunter 

 Humming in the air .... 

 The buzz of flies .... 

 Experiment of J. R. . • . . 

 Opinion of Derham ... 

 Experiments of De Geer • • • 

 Buzz of the gnat . • • . 

 Drone of the beetle . . . 

 Sounds of flies arising from terror 



