70 Dr. W. C. Williamson on 



Vascular Cylinder. 



Transverse. 



p. 214, Fig. 4b, C.N. 247. Fig. 13b, C.N. 259. 



p. 215, Fig. I9b,b,b'. Centre of the cylinder of Fig. 6 enlarged. 

 Longitudinal. 



p. 2i4b,b, C.N. 260. Fig. 21b, C.N. 257, more tangential. 



Phloem ? 



p. 214, Fig. I4g, C.N. 260. Fig. 2ig, C.N. 257. 



Larger Secondary Petiolar Bundles. 



Transverse. 



p. 215, Fig. 20b' (from section Fig. 7, further enlarged), C.N. 250. 

 p. 215, Fig. 18 (axial within its petiole), C.N. 261. 

 p. 215, Fig. 5c, C.N. 248. Fig. 6c, C.N. 249. 

 p. 215, Fig. 4c, C.N. 247. 



From Figs. 2 to 10 the bundle c is developed, and ultimately 

 enclosed within the separating petiole, Fig. iog, C.N. 249.* 



Smaller Secondary Bundles (Leaf Traces?) 

 p. 216, Figs. 3d and 4dd, C.N. 247. 



Fig. 2od, C.N. 250, further enlarged. 



Tracheids with Tylose. 



p. 214, Fig. 15, C.N. 261. Fig. 16, 256. 



Cortex. 



Transverse. 



H. — All the transverse sections. 



Longitudinal. 



Fig. i8f, C.N. 261. 



External Surface. 



H. — p. 213, Fig. 1. At 263 is a fragment of the investing matrix from 

 the original specimen, and also an impression of it in wax. 



RACHLOPTERLS HLRSUTA, Will. 



P. — p. 160, Fig. 9 (through an irregularly branching fragment), C.N. 

 1847. 

 Transverse. 



p. 161, Fig 11 ; a, central axial bundle; g, branches from a ; f, 

 sections of epidermal hairs, C.N. 1845. 



p. 161, Fig. 10 ; clusters of the hairs from g,g. of Fig. 9, C.N. 



1847. 

 p. 161, Fig. 12 vascular axis, c, giving off three vascular bundles, 



d,d,d', of doubtful destination, possibly to rootlets, C.N. 1846. 

 p. 161, Figs. 13 and 14. Possibly sections of two rootlets, like 



Fig. I2d,d. 

 p. 161, Fig. 15. Almost certainly a section of a younger rootlet. 



* In Fig. 7 we find a second larger petiolar bundle developing at b, and giving off a smaller 

 leaf trace (?) at d. At Fig. 8 the petiolar bundle has become free at b and the smaller one at /. 

 We also find at./' the outlines of a new petiole becoming obvious. 



