180 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA COLLEGE. 
EXPLANATION OF THE PLATES ON THE ANATOMY. 
Pith. 
Wood-parenchyma. | 
Double Spiral Vessels. | 
Annular and Spiral Vessels. 
Spiral Vessels. | Plerome Derivative. 
Annular Vessels. > Xylem. 
Scalariform Vessels. | 
Border-pitted Vessels. 
Tracheides. | > Collateral Bundle. 
Woody Fibres. J 
Phloem. 
Stereome Cylinder or Fascicles. 3) 
External Stereome Fascicles. | 
Starch-ring. | ; Periblem Derivative. 
ei - Primary Cortex. f 
Hypoderma. | 
BIIGeMMS; oe fs ae ls ke eo 8 aD ernatoeen eee 
