CONTENTS. 



XIX 

 Page 



Hive Bees — continued. 



Population of a hive ----- 434 



Transportation of hives - - - - 424 



Ventilation ------ 42^5 



Cleanliness ------ 409 



Language ------ 430 



Anger - - - - - - , 430 



Wars ----__ 432 



Enemies - - - . - _ _ 434 



Accidents -----. 435 



Temperature of the hive - - . - 436 



Instincts not mere sensations - - _ _ 437 



LETTER XXL 



Means bv which Insects defexd themselves - • - - 439 — 465 



1. Passive. 



By imitating various substances, objects, and colors - - 439. 



their brilliant colors _ . _ - 442 



frightful aspect, horns, &c. - - - _ 442 



spines, hairs, &c. ----- 443 



hardness and tougrhness - . _ - 444 



involuntary offensive secretions - . _ 444 



power of vitality ----- 445 



extraordinary multiplication - - - - 446 



2. Active. 



By rolling themselves into a ball - - - 447 



simulating death ----- 447 



assuming various attitudes - - - - 448 



motions to alarm or escape their enemies - - - 450 



noises - - - - - 451 



disgusting and powerful scents - - _ 451 



scent-organs . - . . - 453 



explosive discharges - - - - 454 



emission of repulsive fluids - - - - 454 



their weapons of defence - _ - - 457 



concealing themselves _ - _ _ 459 



feeding only by night _ _ _ _ 463 



especial modes of defence - - _ - 464 



LETTER XXn. 



Motions of Insects. 



Larva and Pupa _ _ - _ - 466 — 481 



1. Of Larv<E. 



Destitute of proper legs - - _ - 467 



Provided with proper legs - - - - 474 



Residing in water ----- 477 



2. Of PupcB ------ 478 



LETTER XXIII. 



Motions of Insects — continued. 



Imago ------ 481 — 518 



1. While in repose - - - - - 481 



