CONTENTS. 



Their transformntions 



How they make tlicir exit from tlie cocoons 

 Parts used in our tnaiiuraclures . 



History of llie introduction of silk 

 Varieties and species of silkworms 



Emperor-Moth .... 

 Ingenious contrivance of the cocoon . 



Spinning-Caterpillars continued 



Elastic cocoon o^Toririx cklorana 



Slender covering of the Gypsey-Moth 



Cocoon of the Cream-spot Tiger-moth 



Experiment witii the Dock-Weevil 



Nest of Puss Moth, with cocoons of Ichneumons 



Cocoon of the Horned Mason-Bee 



Experiment with Eriogaster laneslris 



Social Spinning-Caterpillars 



VVinter nest of the Brown-tail moth . 

 Winter nests of the Golden-tail Moth 

 Pendulous leaf nests, from Bonnet 

 Nest of Processionary Caterpillars 



CHAPTER XVIII. 



Structures of Spiders 



Spiders not properly insects, and why 

 Apparatus for spinning 

 Extraordinary number of spinnerules 

 Attachment of the end of a thread 

 Shooting of the lines of Spiders 



1. Opinions of Redi, Swammerdam, and Kirby 



2. Lister, Kirby, and White 



3. La Pluche and Bingley 



4, D'Isjonval, Murray, and Bowman 



5. Experiments of Mr Blackwall 

 His account of the ascent of gossamer 



6. Experiments by J, R. 

 Thread supposed to go off double 

 Subsequent experiments 



Nests, Webs, and Nets of Spiders 



Elastic satin nest of a Spider 



Evelyn's account of huntiug Spiders 



Labyrinthic Spider's nest . 



Erroneous account of the House Spider 



Geometric Spiders 

 Mason-Spiders . 



Ingenious door with a hinge 



Nest from the West Indies, with spring hinge 

 Raft.building Spider 



