PLATE 28. Hairs, Fibres, Glands, &c, of Plants, 



Figure 



1. Cotton, a, normal condition ; 6, portion treated with sulphuric acid and iodine ; 



c, a fragment of gun-cotton ; d, transverse section of cotton-fibre. 



2. Flax, a, normal fibre ; b, portion boiled with nitric acid ; o, treated with nitric 



acid, and afterwards with sulphuric acid and iodine. 



3. Jute, a, normal fibre ; 6, c, portions boiled with nitric acid. 



4. Coir (cocoa-nut fibre), bundle of fibres. 



5. Ditto, a, 6, portions of fibres boiled with nitric acid. 



6. Hemp, a, normal fibre ; 6, portions boiled with nitric acid. 



7. Manilla hemp, a, normal fibres ; 6, fragment boiled with nitric acid, 



8. Sting of Urtica urens. 



9. Surface of the cuticle of Helleborus fcetidus. 



10. Ditto of CaJcile americana. 



11. Imbedded gland of Euta graveolens, vertical section. 



12. Glands of Magnolia, seen from above. 



13. Hair of Siphocampylus bicolor, the cuticle detached by sulphuric acid. 



14. Glands of hop. , side view ; &, from above. 



15. Stellate body from the air-spaces in the leaf of NupJiar lutea. 



16. Hair of Delphinium pinnatifidum. 



17. Hair of Anchusa crispa. 



18. Hair of Pelargonium. 



19. Branched hair of Verbascum Thapsus. 



20. Scale-like hairs from the seed of Gobcea scandens. 



21. Annulated hairs from the seed of Ruellia formosa, in water; 6, detached cell-wall. 



22. Spiral-fibrous hairs from the seed of Gollomia grandiftora, in water. 6, c, frag- 



ments showing the cell-wall and free fibre. 



23. Hair from the seed of a Sdlvia. 



24. Hair from the seed of Acanthodium spicatum. >, a fragment of a branch. 



25. Chinese grass-cloth fibre, a, normal fibre ; 5, fragments boiled with nitric 



acid ; c, afterwards treated with sulphuric acid and iodine. 



26. Puya fibre, a, normal fibre ; 6, fragments boiled with nitric acid ; c, after- 



wards treated with sulphuric acid and iodine. 

 26*. Stellate hairs from the epidermis of Deutzia scabra. 



27. Stellate hair of ivy-leaf. 



28. Stellate hair of Alyssum. 



29. Horizontal stalked hair of Gfrevittea lifhidopTiylla. 



30. T-shaped hair of garden Crysanihemum. 



31. Eamentum or scale from a germinating fern. 



32. Hair from the bulbil of Achimenes. 



33. Hair from the corolla of Digitalis purpurea. 



34. Hair from the corolla of Antirrhinum majus. 



35. Branched hair from the epidermis of Sisymbrium sophia. 



36. Forked hair from Capsella bursa-pastoris. 



37. Branched hair of Alternanthera axillaris. 



38. Gland of Dictamnus fraocinella. 



Epidermis of Dictamnus fraxinella. a, 6, hairs ; c, gland vertically divided. 



40. Glandular hair of Lysimachia vulgaris. 



41. Glandular hair of ScropTiularia nodosa. 



42. Glandular hair of Bryonia alba. 



43. Scale of Beqonia 'platanifolia 



44. Glandular hair of CfUia tricolor. 



45. Vertical section of papilla of Mesem- 



bryanthemum crystallinum. 



46. Seta of a rose. 



47. Tufted hair of Marrubium creti- 



cum. 



