XX CONTENTS. 



Page 



a. While in action - - - - -• - 483 



Walking - . - - - - - 483 



Running "V " " " " ^^^ 



Jumping _ \ - - - - 486 



Climbing ------ 490 



Flying ------ 498 



without wings (Spiders) - - - -. 498 



with wings ----- 504 



Beetles - - - - - 505 



Earwigs ----- 506 



Siylops, &c. - - - - - 506 



Grasshoppers, &c. - - - - 506 



Field Bugs, &c. - - - - 506 



May-flies, &c. . - - - 507 



Butterflies and Moths - - - - 507 



Bees, Wasps, &c. - - - - 509 



Flies, &c. - - - - - 510 



Swimming ------ 512 



Walking in or on water - - - - 513 



Burrowing - - - - - -514 



Hovering - - - - _ - 515 



Gyrations - - - - - -515 



Dancing - - ■ - - - 517 



LETTER XXIV. 



Noises produced by Insects ----- 519 — 537 



While in motion ------ 519 



While feeding, &c. - - . - - 523 



In calling, commanding, or giving an alarm - - - 524 



As expressive of fear, anger, sorrow, love, &c. - - - 527 



By Beetles ------ 527 



Field Bugs ----- 527 



Moths ------ 528 



Bees, &c. - - - - - 528 



Grasshopper tribe ----- 529 



Crickets ----- 530 



Locusts, &c. ----- 533 



Cicadae, «Sic. - - - - - 533 



LETTER XXV. 



Luminous Insects - _ - - - 538 — 549 



Glow-worms ------ 538 



Fire-flies ------ 540 



Other luminous Beetles ----- 543 



Lantern-flics ------ 543 



Other luminous insects ----- 544 



Source of their luminous property - _ - - 546 



Its remote cause - - - _ - - 547 



Its use ------ 548 



LETTER XXVI. 



Hybernation of Insects ----- 550 — 567 



In the egg state ----- 550 



pupa state _ - - - - 552 



larva state _ _ - - - 553 



perfect state - . - - - 553 



