PLATE IV. 



Fig. 



1. Synocladia virgulacea, Phillips. Specimen, natural size, showing non-celluliferous 



surface of the stems. Humbleton Hill. 



2. — — Non-celluliferous surface of another specimen ; a little 



enlarged. Humbleton. 



3. — ' — View of the inner or celluliferous surface of_ the stems, 



at the bottom of a cup-shaped specimen ; a little en- 

 larged. Humbleton Hill. 



4. — — Highly-magnified figure, showing casts of cellules {a) 



looking at their base, with the basal plate removed, d, 

 impression of the celluliferous surface of a stem ; c, im- 

 pressions of cellule-apertures ; d, impressions of the (?) 

 gemmuliferous vesicles on the dividing ridges. 



(The letter d points to the cellule-apertures instead of the row of pits 

 adjoining them.) 



5. — — Highly-magnified view of the celluliferous surface of the 



stems {a), with the (?) gemmuliferous vesicles (d) on a 

 dividing ridge ; and branches or connecting processes (6), 

 with the cellule-apertures (c). Tunstall Hill. 



6. — — Diagram showing the cellules (a) planted on the basal 



plate (3). 



7. — — Gutta-percha cast of a natural impression, showing root- 



like processes striking off from the non-celluliferous 

 surface of the stems. 



8. — — Same as last, highly-magnified, a, root-like processes. 



