8 KIRBY AND SPENCE’S ENTOMOLOGY, price 5*. 
Eield Bugs, &c. 
LETTER XXVI. 
May-flies, &c. 
Hybernation op Insects. 
Butterflies and Moths. 
In the egg state. 
Bees, Wasps, &c. 
pupa state. 
Elies, &c. 
larva state. 
Swimming. 
perfect state. 
Walking in or on water. 
Time of hybernation. 
Burrowing. 
Site of Hybernacula. 
Hover in go 
Solitary and social hybernation. 
Gyrations. 
Hybernation in several states. 
Dancing. 
Torpidity produced by cold. 
Variations of torpidity. 
LETTER XXIV. 
Some insects never torpid. 
Noises produced by Insects. 
State of the Hive Bee in winter. 
While in motion. 
Power of resisting cold by insects in 
While feeding, &c. 
different states. 
In calling, commanding, or giving an 
Cause of this power. 
alarm. 
Resumption of activity. 
As expressive of fear, anger, sorrow, 
love, &c. 
Cause of hybernation. 
By Beetles. 
Eield Bugs. 
Moths. 
LETTER XXVII. 
Instinct op Insects. 
Bees, &c. 
Nature of instinct. 
Grasshopper tribe. 
Definition of instinct. 
Crickets. 
Exquisiteness of the instincts of In¬ 
sects. 
Locusts, &c. 
Variations of instinct. 
Cicadse, &c. 
Variations of instinct in the Hive Bee. 
These variations not the result of reason. 
LETTER XXV. 
Number of instincts in Insects. 
Luminous Insects. 
Extraordinary development of instinct 
Glow-worms. 
in Insects. 
Eire-flies. 
Reason in Insects. 
Other Luminous Beetles. 
Insects gain knowledge from ex- 
Lantern-flies. 
j perience. 
Other Luminous insects. 
Source of their luminous property. 
receive and communicate in¬ 
formation. 
Its remote cause. 
are endowed with memory. 
Its use. 
Appendix. 
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