The black Spots are the smallest of all, and both these latter visible only through the Microscope.

c The Pith of every great Pore.

Fig. 18.

aaaa A piece of the Leaf of a Table.

bbbb The lignous Body with its Pores running by the length of the Trunk.

cccc The Insertions of the Cortical Body, with the Tract of their Pores running directly cross to those of the lignous, viz. by the Diameter or breadth of the Trunk.

Fig. 19.

A Slice of a younger Trunk of a Burdock.

cccc The utmost Shootings of the lignous Body contiguous to the Skin; wholly distributed into the outer Leaves.

eeee The middle Shootings running chiefly into the lower Germens.