Xll CONTENTS. 



mori Enormous Appetites Insects living without 

 Food Rate at which the Silkworm spins Modes of 

 Destroying the Chrysalis Calculation basis of Silk- 

 breeding The two Mulberry Trees Diseases of Silk- 

 worms and their Remedies Improvement of Bombyx 

 mori Tussah Silkworms Bombyx pernyi and B. 

 Mylitta Bombyx Cynthia Extraordinary Qualities of 

 Silk Other New Species of Silkworm Spreading of 

 these New Races The Madagascar Silkworm Pro- 

 duction of Coloured Silk by the Insects themselves 

 Experiments Bombyx madrono Silk of the Clothes - 

 Moth, Tinea The Paraguay Spider Ichneumon of 

 the West Indies Silk Imported into Liverpool 



935 



CHAPTER III. 

 COLOUK-PKODUCING INSECTS. 



The Kermes Latreilleand his genus Coccus Coccus ilicis 

 Crimson of the Romans Brussels and Flemish Tapes- 

 tries Coccus polonicus Coccus of the Poterium Coccus 

 urva-ursi The Cochineal, Coccus cacti Plants on which 

 the Cochineal lives Nopaleries Grana sylvestra and 

 Grana fina Rearing of Cochineal The Cochineal at 

 Tenerifle The Bluebottle Fly and the Aphides Gene- 

 ration extraordinary Two New Cochineals in Australia 

 Cocusfab<s (or Aphis fabae) in France Its Peculiar 

 Colouring Matter Lac Carminium, its Discovery and 

 Properties The Colouring Matter of the Cochineal 



