17 



LIST OF THE LANTERN SLIDES. 



1 . Cotton, sll0^ving its flat and twisted fibre of cellulose. 



2. Linen Fibres, the elementary fibres of flax (Linum iisitatissi- 



mum) are cells of pellucid membranes joined end to end with 

 can-like joints, between which form thickened vessels with 

 fibrous matter ; along with these are seen the woody fibre 

 or tissue, consisting of ''elongated cells or tubes, with 

 tapering extremities which overlap each other, and by their 

 union longitudinally form the fibres called hemp and flax." 



3. Typical Woollen Fibre. 



4. Spider Silk. 



5. Silk of Saturnia carpini. 



6. Silk Bave and Brin in contact and separated, also showing 



sections. 



7. Bave of Bengal silk, showing loops as seriposited, demonstrating 



that the fibre is regular. 



8. Eough ])laces in the silk fibre formerly supposed to be in- 



herent, shown under tlie microscope to be merely unresolved 

 loops in rabble, caused by imperfect reeling. 



9. Silk Fibres, Bave and Brin shown to be perfectly smooth, 



although somewhat irregular in thickness. 



10. Larva of Bombyx Mori feeding on the mulberry leaf. 



1 1 . Bengal cocoons of Bombyx fortunatus. 



12. Avenues of twigs upon which the larva of Bombyx Mori form 



their cocoons in Italy. 



13. Interior of magnanerie or cocoon sorting room. 



14. Oven or chamber in which the chrysalides are killed to prevent 



them escaping from the cocoons. 



15. A Native Indian Wheel for silk reeling. 



16. Improved European Machinery for cocoon-reeling with the 



Tavelette Keller, and girl reeling. 



17. Silk Moths of the Bombyx Mori. 



18. Larva of Anthertea mylitta, or Tussur Silkworm. 



19. Cocoons of the Tussur Silkworm. 



20. Cocoons of the Tussur Silkworm attached to branches. 



21. Indian Tussur Silk Bave, showing fibrilla3 and sections. 



22. Indian Tussur Silk Brin, showing fibrillee separated. 



