PLATE 46. Starch. 



Figure 



1. Section of a cell of the albumen of a young maize-seed, showing the nascent 



starch-grains imbedded in protoplasm. 



2. Starch-grains of rye, with a stellate hilum. 



3. Section of a cell from the outer horny part of the albumen of maize ; the starch- 



grains completely fill the cell, and by their crowded condition have compressed 

 each other into polygonal forms ; the hilum is visible. 



4. Starch-grains of bean. 



5. Free starch-grains of maize from the cells of the centre of the seed ; 5*, young 



starch-grains of ditto. 



6. Starch-grains of orris-root ; used to adulterate snuiF. 



7. Compound starch-grains and separated granules, from the corm of the crocus. 



8. Lenticular starch-grains of wheat, a, seen in face ; 6, seen edgewise. 



9. Discoid starch-grains of barley. , front view ; &, edgewise. 



10. Compound starch-grains and separated granules of oats. 



11. Compound grains and separated granules of Portland arrowroot (Arum 



maculatum). 



12. Part of a section of a cell of the grain of rice, exhibiting very minute starch- 



grains, firmly compacted as in maize. 



13. A portion of the same, more magnified. 



14. Starch-grains of Cassava (Jatropha Manihot)*. Tapioca. 



15. Young starch-grains from the cells o*f the prothallium of a fern (Gymnogramma). 



16. Compound starch-grains and separated granules of the bread-fruit (Artocarpus 



incisa)*. 



17. Starch-grains of Cycas circinalis*. 



18. Starch-grains of arrowroot from Singapore*. 



19. Starch-grains of an East-Indian arrowroot obtained from a species of Curcuma*. 



20. Cell of a potato, showing the loosely -packed starch-grains. 



21. Isolated starch-grains of the potato. 



22. Starch-grains of Tacca pinnatifida, from Tahiti*. 



23. Starch-grains of sago (from a Sagus ?)*. 



24. Starch from plantain-meal (Musa). a, front view ; &, edgewise*. 



25. Starch of Tous-les-mois (Canna). a, front view ; 6, edgewise*. 



26. Starch-grains of true West-Indian arrowroot (Maranta arundinacea). 



27. Isolated starch-grains from the cotyledon of a haricot bean. 



28. Part of a cell of the stem of the white lily (Lilium candidum), showing nascent 



starch-grains : a, forming in cavities of the protoplasm, c ; 6, nucleus. 



* The figures to which the asterisk is appended were taken from specimens witli which we were 

 favoured from the Muieurn of Economic Botany at Kew. 



