98 EXPLANATION OF PLATES 58. 59. 60. 61. 



Plate 58. V. I. p. 370. 



Cycas revoluta, producing Buds from the axillse of the 

 scales, or persistent bases of leaves, that form the false bark. 

 Drawn from a plant in the conservatory of Lord Grenville 

 at Dropmore, 1832. 



Plate 59. V. I. p. 371. 



Fig. 1. Zamia pungens, with its fruit, as it grew at Walton 



on Thames, 1832, in the Conservatory of Lady 



Tankerville. (Lambert.) 

 Fig. 2. Transverse section of the trunk of Zamia horrida, 



from the Cape of Good Hope. (Buckland.) 

 Fig. 3. Transverse section of a young trunk of Cycas 



revoluta. See Geol. Trans. Lond. 1828. N. S. Vol. 



ii. Pt. 3. PI. 46. (Buckland.) 



Plate 60. V. I. p. 373. 



Fig. 1. Silicified trunk of Cycadites megalophillus, from 

 the Dirt bed in the Isle of Portland. (Original.) 



Fig. 2. Portion of the base of Fig. 1. See V. I. p. 373, 

 Note. (Original.) 



In Plates 60, 61, A represents the central mass of cellular 

 tissue. B the single circle of radiating woody plates. 

 C the circle of cellular tissue, surrounding B. And D 

 the case or false Bark, surrounding C. And in PI. 61, 

 Fig. 1, b, represents a second circle of radiating woody 

 plates. 



Plate 61. V. I. p. 373. Note. 



Fig. 1. Silicified trunk of Cycadites microphyllus, from 

 the Isle of Portland, with numerous buds rising from 

 the axilla? of the Petioles. (Original.) 



