^ FROM THE SECONDARY ROCKS OF BRITAIN. 71.7 



Fig. 8. Section of a seed, showing the two layers of the coat, and the delicate membrane inve* 1 the 



1 y "■ ■ ■ 



nucleus 



Miqud) 



Tv 



lowing the polygonal form of the cell of tl inner iiulurat 



: of the outer wnll. 



Fig 



Plate L X . 



oblique sections of the vascular cords 



of 



disappeared, and, second, the thicker- walled and larger parnidiwna I llu 



net 



All the 



with blunt ends. The gpace 



Fig. 4. 



composed of small spherical cells, which increase in size towards the pcx of the fruit 

 tie parenchyma from the side of the fruit, with its epidermis, competed of a double lav» 

 the inner one being sometimes folded into the substance of the fruit. 



calariform 



the 



Fig. 5. The bundle of scalariform tissue seen in fig. 4, greatly magnified 



fruit figured 



wi 



ramentum. 



Fig. 8. Longitudinal section of a leaf from the margin of the fruit figured on Plate LIX. tig. 1 >w 



the form of the cells and a large gum-canal. 

 Fig. 9. Longitudinal section of a petiole with numerous gum-canals. 



Fig. 10. A cell from the leaf, fig. 8, greatly magnified, to show the scalariform markings on its walls. 

 Fig. 11. Transverse section of the ramentum from the lower surface of the petiole. 

 Fig. 12. Scalariform tissue of Bennettites Gibsonianus, Carr. 

 Fig. 13. Disk-bearing tissue of Yatesia Morrisii, Carr. 



Plate LXI. Bennettites porikmdkus, Carr. 



Fig. 1. External aspect of the fossil; from a specimen in the Museum of the Geological Boa ? at 



London, 

 Fig. 2. Transverse section, showing the pith, the slender wood cylinder, and the bark, with the permanent 



ba 



Fi 



fruit-branches, natural 

 wnitinsr the wood cvlin 



•bearina: branch 



Plate LXII. 



Fig. 1. External aspect of B. Peachianm, Carr., from a specimen found on the beach 



British Museum 



pecimen has been attacked 



and 



The bases of the petioles have resisted the actio 



annelid, which has everywhere attacked the interspaces 



ramentum. A few 

 cimen. It should 

 portion of the stem 



occur scattered over the surface of the sp 



stated that the surface 



hi 



VOL. XXVI. 



