CONTENTS. 



CHAPTER I. ON THE NATURE OF THE META- 

 MORPHOSES OF INSECTS, ILLUSTRATED IN 

 THE TRANSFORMATIONS OF THE BUTTERFLY. 



INTRODUCTORY Singularity of Transformations Remark- 

 able Caterpillar of the Swallow-tailed Butterfly True 

 nature of Chrysalides, and misstatement respecting them 

 Structure of Chrysalides Errors of Gcedart Golden 

 Chrysalides Inquiry how the Fluids of Chrysalides are 

 converted into Solids Experiments of Reaumur Anal- 

 ogy of the inactive State of a Chrysalis with the chew- 

 ing of the Cud in Animals State of the Chrysalis when 

 ready to disclose the Butterfly Extrication of the Fly- 

 Extension of the Antennae and Tongue Supposed Uses 

 of the Antennae Expansion of the Wings Scales of the 

 Wings, 13 



CHAPTER II. FURTHER OBSERVATIONS ON THE 

 METAMORPHOSES OF INSECTS, AS ILLUSTRA- 

 TED IN THE BUTTERFLY. 



Theory of Swammerdam Theory of Herold Observations 

 thereon Analogy of Insect Transformations with the 

 Development of higher Animals and Man No growth in 

 Winged Insects White Butterflies Bloody Rain Pei- 

 resc's quaint Statement Double-brooded Insects Dura- 

 tion of the Life of Insects shortened by Warmth, and 

 prolonged by Cold Reaumur's Experiments Irregular 

 Period of Duration of Insects in the Chrysalis State 

 Periodical Appearance of Butterflies, 30 



CHAPTER III. THE NATURAL HISTORY OF VARI- 

 OUS INSECTS WHICH FORM COCOONS. 



Conical Chrysalides produce Moths, and are enclosed in 

 Cocoons Supposed causes of the Difference between 

 Butterflies and Moths in this respect Distribution of 

 Colours in Insects Cocoons of pure Silk Slender silken 

 Cocoons guarded by Leaves Mode of Spinning Cocoons 

 Gum and Paste introduced into the Substance of Co- 

 coons Processionary Caterpillars form Cocoons in com- 



