(2) The black band with white dots round the marrow, represents the marrow-sheath.
(3) From the marrow-sheath run the marrow-rays
'dividing the vascular circle into numerous compact segments.' A 'ray' cannot divide anything into a segment. Only a partition, or a knife, can do that. But we shall find presently that marrow rays ought to be called marrow-plates, and are really mural, forming more or less continuous partitions.
(4) The compact segments 'consist of woody vessels and of porous vessels.' This is the first we have heard of woody vessels! He means the 'fibres ligneux' of Figuier; and represents them in each compartment, as at C (Fig. 25). without telling us why he draws the woody vessels as radiating. They appear to radiate, indeed, when wood is sawn across, but they are really upright.
(5) A moist layer of greenish cellular tissue called the cambium layer—black in Figure 25—and he draws it in flat arches, without saying why.
(6), (7), (8) Three layers of bark (called in his note Endophlœum; Mesophlœum, and Epiphlœum!) with 'laticiferous vessels.' [[43]]
(9) Epidermis. The three layers of bark being separated by single lines, I indicate the epidermis by a double one, with a rough fringe outside, and thus we have the parts of the section clearly visible and distinct
for discussion, so far as this first figure goes,—without wanting one letter of all his three and twenty!
17. But on the next page, this ingenious author gives us a new figure, which professes to represent the same order of things in a longitudinal section; and in retracing that order sideways, instead of looking down, he not only introduces new terms, but misses one of his old layers in doing so,—thus: