ion through leaf showing seven bundles 



through the median niesophyll tissue, and two oil 



glands in the left half. x 93 



6 Transverse section through the outer portion of a leaf, the 



bundles being more distinctly seen than in Fig. 5. 



A magnification towards the edge of a leaf, having four 

 bundles and two oil glands in the field of vision. 

 Stomata can be traced on both surfaces of the leaf, 

 x 155. 



Transverse section through midrib or central vascular 

 bundle of a leaf. Sclerenchymatous cells are seen to 

 band it on both ventral and dorsal sides. The xylem 

 vessels are few, the phloem being indicated by the 

 black patch, only a single row of spongy mesophyll 

 separates the palissade layers (top and bottom of plate ). 

 x 630. 



Transverse section through a bundle of a leaf and sur- 

 rounding tissue. Just above the bundle and touching 

 the left edge of the circle are two rectangular cells of 



On the top of the 



10. A longitudinal section of a leaf showing three lysigenous 



oil glands near the top surface and a bundle in the 

 left half. x 155. 



11. Longitudinal section through the median bundle and its 



adjacent leaf tissue. The xylem and phloem run 

 through the centre being bounded top and bottom by 

 sclereuchymatous vessels (showing fainter than the 

 above). The palissade parenchyma has its long walls 

 at right angles to these, which are succeeded by the 

 epidermal cells. x 378. 



