LESSON 8.] 



SCLEROGEN, OR LIGNINE. 



FIG. 42. 



FIG. 43. 



Linum usitatissimum, or Flax plant. 



Cannabis sativa, or Hemp plant. 



161. Flax (or lint) is thus procured from the bark of Linum 

 usitatissimum (Fig. 42), hemp, from Cannabis sativa (Fig. 43), New 



FIG. 44. 



FIG. 45. 



Phormium tenax. New Zealand flax. 



Zealand flax from Phormium tenax 

 (Fig. 44), and bass (or bast) from the 

 common Lime, or Linden tree. 



162. Fibres are also procured for 

 manufacturing purposes from the Pine- 

 apple plant (Ananassa sativa}, from 



Yucca gloriosa (Fig. 45), from Boehmeria nivea, which yields the 

 Chinese grass-fibre, from most of the plants belonging to the mallow 

 and nettle tribes, and from some of the leguminous plants. 



163. The tenacity of different kinds of woody fibre, as^ contrasted 

 with silk, is given by De Candolle, thus : 



Yucca gloriosa. 



