PLATE II. 



FIG. 



I. A grain of Barley n. s. with the husks removed from lower end to 



show the embryo. 

 2 to 8. Grains of barley in different stages of development 



(growth) when placed in moist earth : 4 to 1 6 days. 

 9. A diagram of the young barley plant. 



10. A young rootlet greatly magnified, showing the cap or sucker. 



11. A young newly-formed leaf with strap, s. 



12. A portion of a fully-developed leaf of barley : s, stalk, st, strap, 



b, blade. 



13. A minute portion of a leaf blade cut transverse-vertically and 



highly magnified, showing the position of the parallel veins 

 {v) of the leaf. 



14. A horizontal section of barley stem (straw), highly magnified. 



The inner circle represents a section of the growing point of 

 stem, wood bundles in both. 



15. A vertical section of the same. 



1 6. A minute portion of skin of young straw with hairs developing, 



highly magnified. 



