66 DESCRIPTION OF FOSSIL TREES DISCOVERED 



to offer a brief explanation of the remaining plate, which having been en- 

 graved for my previous work, as exhibiting several varieties of tissue, I have 

 judged worthy of being transferred to the present. 



Explanation of the Figures of Plate XVI. 



This plate contains representations of portions of thin slices of fossil 

 vegetables of various kinds, viewed by transmitted light, and, with the ex- 

 ception of Fig. 9, greatly enlarged. 



Fig. 1. Part of a transverse slice of fossil wood found near Whitby, 

 much broken up and distorted. Enlarged about fifty-five times. 



Fig. 2. Portion of a longitudinal slice of part of one of the fossil vege- 

 tables found at Lennel Braes, figured in Plate VIII. It exhibits the trans- 

 verse section of several medullary rays. Enlarged about fifty-five times. 



Fig. 3. Represents a portion of a transverse slice of the Wideopen tree, 

 figured in Plates IX. and X. The portion here represented is one of the 

 most regular, and has been enlarged about 100 times. 



Fig. 4. Portion of a transverse slice of a large fossil tree from New Hol- 

 land, in the Museum of the University of Edinburgh. 



Fig. 5. Portion of a transverse slice of the Newbiggin tree, represented 

 by Figs. 5. and 6. of Plate IX., and here enlarged about 100 times. 



Fig. 6. Represents a portion of a transverse slice of silicified fossil wood, 

 the locality of which is unknown. It is enlarged about fifty-five times, and 

 resembles the Coniferae in structure. 



Fig. 7- Portion of a transverse slice of Anabathra pulcherrima, figured 

 in Plate VIII. 



Fig. 8. Attached to this plant, as already mentioned at page 40, is an ir- 

 regular darker- coloured mass, exhibiting regular structure in various places, 

 and having interspersed in it numerous oval forms, of part of one of which 

 this figure is a representation. These oval forms resemble the pith of some 

 dicotyledonous plants, as well as the stipe of various ferns. I have not, 

 however, satisfied myself as to their real nature. 



