PLATE XVI. 



VEGETABLE STEUCTUEES. 



1. Cells of Tonila Ccrevlsia, or Yeast Plant. 2. Hairs of Urtica Dlolca, or Stinging-Nettle. 3. Ciliated 

 spores of Confer>0!. 4. Starch-grains Ijroken by applying heat. 5. Starch from Tous-les-mois. 

 6. Starch from Bice. 7. Starch from Sago. 8. Imitation-Sago Starch. 9. Wheat Starch. 10. Bhn- 

 barb Starch retained in their cells. 11. Maize Starch. 12. Oal Starch. 13. Barley Starch. U.Potato 

 Starch. 16. Section of Potato attacked hy fnngoid disease. 1?. Section of Potato, showing total 

 absence of Starch grains. 18. Section of Potato, cells filled with healthy Starch grains. 15. Section 

 of a ripe Strawberry, cells ovoid, and containing a brown nucleus. 19. Mushroom Spawn, elongated 

 cells. 50. Simple stellate tissue from the stem of a Kush. 21. Spiral vessels from the Leek and 

 Bhnbarb. 22. Badiating cells or pores from the outer shell of the Ivory-Nut. 



